fix(github): reference reusable workflow correctly

related to #2781

Author: ThorbenLindhauer

.github/workflows/java-dependency-check.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   call-reusable-flow:
-    uses: camunda/automation-platform-github-actions/.github/workflows/java-dependency-check.yml
+    uses: camunda/automation-platform-github-actions/.github/workflows/java-dependency-check.yml@main
     if: ${{ github.event.label.name == 'bot:java-dependency-check' }}
     with:
       ref: main