chore(deps): update actions/setup-node action to v5 (#1387)

Co-authored-by: grafanarenovatebot[bot] <146220760+grafanarenovatebot[bot]@users.noreply.github.com>

Author: grafanarenovatebot[bot]

actions/validate-renovate-config/action.yml

@@ -11,7 +11,7 @@ runs:
   using: composite
   steps:
     - name: Setup Node.js
-      uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+      uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
       with:
         node-version: "20"