🔨 Specify LPC toolchain 1.100301.220327 (#26249)

ini/lpc176x.ini

@@ -15,6 +15,7 @@
 [common_LPC]
 platform          = https://github.com/p3p/pio-nxplpc-arduino-lpc176x/archive/0.1.3.zip
 platform_packages = framework-arduino-lpc176x@^0.2.8
+                    toolchain-gccarmnoneeabi@1.100301.220327
 board             = nxp_lpc1768
 lib_ldf_mode      = off
 lib_compat_mode   = strict