chore(deps): update codecov/codecov-action action to v5 (elastic#919)

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>

Author: elastic-renovate-prod[bot]

libs/go-kibana-rest/.github/workflows/workflow.yml

@@ -44,7 +44,7 @@ jobs:
         run: go build
       - name: Run test
         run: make test
-      - uses: codecov/codecov-action@b9fd7d16f6d7d1b5d2bec1a2887e65ceed900238 # v4
+      - uses: codecov/codecov-action@015f24e6818733317a2da2edd6290ab26238649a # v5
         with:
           files: coverage.out
           flags: unittests