Merge branch 'fforster/semantic-release' into 'main'

chore(semantic-release): Print deprecation warning for `GITLAB_TOKEN`.

See merge request gitlab-com/gl-infra/common-ci-tasks!574

semantic-release.yml

@@ -17,8 +17,12 @@ spec:
   variables:
     GITLAB_URL: $CI_SERVER_URL
   before_script:
-    - if [[ -n "$SEMANTIC_RELEASE_GITLAB_TOKEN" ]]; then
-        export GITLAB_TOKEN=$SEMANTIC_RELEASE_GITLAB_TOKEN;
+    - |
+      if [[ -z "${SEMANTIC_RELEASE_GITLAB_TOKEN}" && -n "${GITLAB_TOKEN}" ]]; then
+        printf '\e[31;1m%s\e[0m\n' 'WARNING: GITLAB_TOKEN is deprecated -- use SEMANTIC_RELEASE_GITLAB_TOKEN instead'
+      fi
+      if [[ -n "${SEMANTIC_RELEASE_GITLAB_TOKEN}" ]]; then
+        export GITLAB_TOKEN="${SEMANTIC_RELEASE_GITLAB_TOKEN}"
       fi
     # Allow the semantic release job to fetch all the latest changes on the
     # default branch before performing the semantic release.