chore(deps): update codecov/codecov-action digest to 18283e0 (elastic#1137)

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@ad3126e916f78f00edff4ed0317cf185271ccc2d # v5
+      - uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5
         with:
           files: coverage.out
           flags: unittests