Use ststm32 5.6.0 for now

platformio.ini

@@ -254,7 +254,7 @@ monitor_speed = 250000
 # STM32F103RE
 #
 [env:STM32F103RE]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103RE
 build_flags   = !python Marlin/src/HAL/HAL_STM32F1/build_flags.py
@@ -272,7 +272,7 @@ upload_protocol = stlink
 # STM32F103RC_fysetc
 #
 [env:STM32F103RC_fysetc]
-platform          = ststm32
+platform          = ststm32@5.6.0
 framework         = arduino
 board             = genericSTM32F103RC
 #board_build.core = maple
@@ -295,7 +295,7 @@ upload_protocol   = serial
 # BigTree SKR Mini V1.1 / SKR mini E3 / SKR E3 DIP (STM32F103RCT6 ARM Cortex-M3)
 #
 [env:STM32F103RC_bigtree]
-platform          = ststm32
+platform          = ststm32@5.6.0
 framework         = arduino
 board             = genericSTM32F103RC
 platform_packages = tool-stm32duino
@@ -309,7 +309,7 @@ src_filter        = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
 monitor_speed     = 115200
 
 [env:STM32F103RC_bigtree_USB]
-platform          = ststm32
+platform          = ststm32@5.6.0
 framework         = arduino
 board             = genericSTM32F103RC
 platform_packages = tool-stm32duino
@@ -326,7 +326,7 @@ monitor_speed     = 115200
 # STM32F4 with STM32GENERIC
 #
 [env:STM32F4]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = disco_f407vg
 build_flags   = ${common.build_flags} -DUSE_STM32GENERIC -DSTM32GENERIC -DSTM32F4 -DMENU_USB_SERIAL -DMENU_SERIAL=SerialUSB
@@ -339,7 +339,7 @@ monitor_speed = 250000
 # STM32F7 with STM32GENERIC
 #
 [env:STM32F7]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = remram_v1
 build_flags   = ${common.build_flags} -DUSE_STM32GENERIC -DSTM32GENERIC -DSTM32F7 -DMENU_USB_SERIAL -DMENU_SERIAL=SerialUSB
@@ -352,7 +352,7 @@ monitor_speed = 250000
 # ARMED (STM32)
 #
 [env:ARMED]
-platform    = ststm32
+platform    = ststm32@5.6.0
 framework   = arduino
 board       = armed_v1
 build_flags = ${common.build_flags} -DUSBCON -DUSBD_VID=0x0483 '-DUSB_MANUFACTURER="Unknown"' '-DUSB_PRODUCT="ARMED_V1"' -DHAL_PCD_MODULE_ENABLED -DUSBD_USE_CDC -O2 -ffreestanding -fsigned-char -fno-move-loop-invariants -fno-strict-aliasing -std=gnu11 -std=gnu++11
@@ -365,7 +365,7 @@ monitor_speed = 250000
 # Longer 3D board in Alfawise U20 (STM32F103VET6)
 #
 [env:STM32F103VE_longer]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103VE
 monitor_speed = 250000
@@ -382,7 +382,7 @@ lib_ignore    = Adafruit NeoPixel, LiquidTWI2, SPI
 # MKS Robin (STM32F103ZET6)
 #
 [env:mks_robin]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103ZE
 extra_scripts = buildroot/share/PlatformIO/scripts/mks_robin.py
@@ -397,7 +397,7 @@ lib_ignore    = Adafruit NeoPixel, SPI
 # MKS ROBIN LITE/LITE2 (STM32F103RCT6)
 #
 [env:mks_robin_lite]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103RC
 extra_scripts = buildroot/share/PlatformIO/scripts/mks_robin_lite.py
@@ -412,7 +412,7 @@ lib_ignore    = Adafruit NeoPixel, SPI
 # MKS Robin Mini (STM32F103VET6)
 #
 [env:mks_robin_mini]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103VE
 extra_scripts = buildroot/share/PlatformIO/scripts/mks_robin_mini.py
@@ -427,7 +427,7 @@ lib_ignore    = Adafruit NeoPixel, SPI
 # MKS Robin Nano (STM32F103VET6)
 #
 [env:mks_robin_nano]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103VE
 extra_scripts = buildroot/share/PlatformIO/scripts/mks_robin_nano.py
@@ -442,7 +442,7 @@ lib_ignore    = Adafruit NeoPixel, SPI
 # JGAurora A5S A1 (STM32F103ZET6)
 #
 [env:jgaurora_a5s_a1]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103ZE
 extra_scripts = buildroot/share/PlatformIO/scripts/jgaurora_a5s_a1_with_bootloader.py
@@ -460,7 +460,7 @@ monitor_speed = 250000
 # Shield - https://github.com/jmz52/Hardware
 #
 [env:STM32F407VE_black]
-platform = ststm32@5.4.3
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = blackSTM32F407VET6
 extra_scripts = pre:buildroot/share/PlatformIO/scripts/black_stm32f407vet6.py
@@ -475,7 +475,7 @@ monitor_speed = 250000
 # Bigtreetech SKR Pro (STM32F407ZGT6 ARM Cortex-M4)
 #
 [env:BIGTREE_SKR_PRO]
-platform = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = BigTree_SKR_Pro
 extra_scripts = pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
@@ -496,7 +496,7 @@ monitor_speed = 250000
 # BIGTREE_SKR_BTT002 (STM32F407VET6 ARM Cortex-M4)
 #
 [env:BIGTREE_BTT002]
-platform = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = BigTree_Btt002
 extra_scripts = pre:buildroot/share/PlatformIO/scripts/generic_create_variant.py
@@ -530,7 +530,7 @@ monitor_speed = 250000
 # Malyan M200 (STM32F103CB)
 #
 [env:STM32F103CB_malyan]
-platform    = ststm32
+platform    = ststm32@5.6.0
 framework   = arduino
 board       = malyanM200
 build_flags = !python Marlin/src/HAL/HAL_STM32F1/build_flags.py -DMCU_STM32F103CB -D __STM32F1__=1 -std=c++1y -D MOTHERBOARD="BOARD_MALYAN_M200" -DSERIAL_USB -ffunction-sections -fdata-sections -Wl,--gc-sections
@@ -542,7 +542,7 @@ lib_ignore  = Adafruit NeoPixel, LiquidCrystal, LiquidTWI2, TMCStepper, U8glib-H
 # Chitu boards like Tronxy X5s (STM32F103ZET6)
 #
 [env:chitu_f103]
-platform      = ststm32
+platform      = ststm32@5.6.0
 framework     = arduino
 board         = genericSTM32F103ZE
 extra_scripts = buildroot/share/PlatformIO/scripts/chitu_crypt.py