BRE-87 Add enable feature for upcoming release version Slack notifications

.github/workflows/version-bump.yml

@@ -12,6 +12,10 @@ on:
         description: "Cut RC branch?"
         default: true
         type: boolean
+      enable_slack_notification:
+        description: "Enable Slack notifications for upcoming release?"
+        default: false
+        type: boolean
 
 jobs:
   bump_version:
@@ -26,6 +30,14 @@ jobs:
         with:
           version: ${{ inputs.version_number_override }}
 
+      - name: Slack Notification Check
+        run: |
+          if [[ "${{ inputs.enable_slack_notification }}" == true ]]; then
+            echo "Slack notifications enabled."
+          else
+            echo "Slack notifications disabled."
+          fi
+
       - name: Check out branch
         uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
         with:
@@ -199,7 +211,7 @@ jobs:
         run: gh pr merge $PR_NUMBER --squash --auto --delete-branch
 
       - name: Report upcoming release version to Slack
-        if: ${{ steps.version-changed.outputs.changes_to_commit == 'TRUE' }}
+        if: ${{ steps.version-changed.outputs.changes_to_commit == 'TRUE' && inputs.enable_slack_notification == true }}
         uses: bitwarden/gh-actions/report-upcoming-release-version@main
         with:
           version: ${{ steps.set-final-version-output.outputs.version }}