Fix CI

.gitlab-ci.yml

@@ -30,7 +30,7 @@ build:
     - arduino-cli lib install --git-url https://github.com/patricklaf/SNMP.git --config-file arduino-cli.yaml
 
     # Compile artifact
-    - arduino-cli compile --fqbn esp32:esp32:esp32wroverkit icbm.ino --output-dir firmware --build-property build.extra_flags="-DICBM_GIT_VERSION=$CI_COMMIT_SHORT_SHA -DICBM_GIT_TIMESTAMP=$CI_COMMIT_TIMESTAMP"
+    - arduino-cli compile --fqbn esp32:esp32:esp32wroverkit icbm.ino --output-dir firmware --build-property build.extra_flags="-DICBM_GIT_VERSION=\"$CI_COMMIT_SHORT_SHA\" -DICBM_GIT_TIMESTAMP=\"$CI_COMMIT_TIMESTAMP\""
     - zip -r firmware.zip firmware
   artifacts:
     when: always