[CI] Make action scripts PlatformIO compliant

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

.github/actions/pio-build/entrypoint.sh

@@ -1,19 +1,19 @@
 #!/bin/bash
 
-CMSIS_VERSION=$1
-CMSIS_ARCHIVE=CMSIS-${CMSIS_VERSION}.tar.bz2
+CMSIS_VERSION="$1"
+CMSIS_ARCHIVE="CMSIS-${CMSIS_VERSION}.tar.bz2"
 
 # Install the development version of ststm32 platform
-platformio platform install https://github.com/platformio/platform-ststm32.git
+platformio platform install "https://github.com/platformio/platform-ststm32.git"
 
 # Prepare framework for CI
 python3 -c "import json; import os; fp=open(os.path.expanduser('~/.platformio/platforms/ststm32/platform.json'), 'r+'); data=json.load(fp); data['packages']['framework-arduinoststm32']['version'] = '*'; fp.seek(0); fp.truncate(); json.dump(data, fp); fp.close()"
 
-ln -sf $GITHUB_WORKSPACE $HOME/.platformio/packages/framework-arduinoststm32
+ln -sf "$GITHUB_WORKSPACE" "$HOME/.platformio/packages/framework-arduinoststm32"
 # Download and unpack CMSIS package
-wget --no-verbose https://github.com/stm32duino/ArduinoModule-CMSIS/releases/download/$CMSIS_VERSION/CMSIS-$CMSIS_VERSION.tar.bz2
-tar -xjf CMSIS-$CMSIS_VERSION.tar.bz2
-cd $GITHUB_WORKSPACE/CI/build/
+wget --no-verbose "https://github.com/stm32duino/ArduinoModule-CMSIS/releases/download/$CMSIS_VERSION/$CMSIS_ARCHIVE"
+tar -xjf "$CMSIS_ARCHIVE"
+cd "$GITHUB_WORKSPACE/CI/build/"
 python3 platformio-builder.py --board=blackpill_f103c8 --board=remram_v1
 
 exit $?