Do not allow failures in the static code analysis stage.

static-code-analysis.yml

@@ -9,7 +9,7 @@ variables:
 run_static_code_analysis:
   image: ${COMMON_IMAGE}
   stage: static_code_analysis
-  allow_failure: true
+  allow_failure: false
   script:
     - echo ${RUN_FLAWFINDER}
     - "${RUN_FLAWFINDER} ${SOURCE_FOLDER}"