ci: Bump actions/cache from 4 to 5 (#697)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/gitleaks.yml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Cache gitleaks archive
         id: cache_gitleaks
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /usr/local/bin/gitleaks
           key: gitleaks-${{ env.PLATFORM }}-${{ env.GITLEAKS_VERSION }}