Specify ststm32 @ 6.1.x

platformio.ini

@@ -326,7 +326,7 @@ board     = nxp_lpc1769
 # HAL/STM32 Base Environment values
 #
 [common_stm32]
-platform      = ststm32@<6.2.0
+platform      = ststm32@~6.1.0
 platform_packages = framework-arduinoststm32@>=4.10700,<4.10800
 lib_deps      = ${common.lib_deps}
 lib_ignore    = SoftwareSerial