deps: update stcarolas/setup-maven action to v5

Author: renovate-bot

tests/validate-bom/action.yml

@@ -13,7 +13,7 @@ runs:
       java-version: 11
       cache: maven
   - name: Set up Maven
-    uses: stCarolas/setup-maven@v4.5
+    uses: stCarolas/setup-maven@v5.1
     with:
       maven-version: 3.8.4
   - name: Create temporary directory /tmp/bom-validation