ci: Auto-update Elastic version on tls branch

.github/workflows/update-merge.yml

@@ -7,13 +7,14 @@ on:
       - completed
     branches:
       - update/main
+      - update/tls
       - update/release-7.x
 
 jobs:
 
   merge:
     name: Merge pull request
-    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    if: github.event.workflow_run.conclusion == 'success'
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/update.yml

@@ -11,12 +11,11 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        release:
-          - 8.x
-          - 7.x
         include:
           - release: 8.x
             branch: main
+          - release: 8.x
+            branch: tls
           - release: 7.x
             branch: release-7.x
 
@@ -68,12 +67,15 @@ jobs:
           cur_ver="$ELASTIC_VERSION"
           new_ver=${{ fromJson(steps.get-latest-release.outputs.result).version }}
 
-          # Escape dot characters so sed interprets them as literal dots
-          cur_ver="$(echo $cur_ver | sed 's/\./\\./g')"
+          # Escape period characters so sed interprets them literally
+          cur_ver="${cur_ver//./\\.}"
 
-          for f in .env README.md; do
-              sed -i "s/${cur_ver}/${new_ver}/g" "$f"
-          done
+          declare -a upd_files=( .env README.md )
+          if [ -f tls/README.md ]; then
+              upd_files+=( tls/README.md )
+          fi
+
+          sed -i "s/${cur_ver}/${new_ver}/g" "${upd_files[@]}"
 
           git_status="$(git status --porcelain)"
           if [[ ${git_status} ]]; then