chore(deps): update google/oss-fuzz digest to a0ac9cb

Signed-off-by: renovate-sh-app[bot] <219655108+renovate-sh-app[bot]@users.noreply.github.com>

Author: renovate-sh-app[bot]

.github/workflows/fuzzing.yml

@@ -10,12 +10,12 @@ jobs:
     steps:
       - name: Build Fuzzers
         id: build
-        uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@cafd7a0eb8ecb4e007c56897996a9b65c49c972f # master
+        uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@a0ac9cb62cbbbec7fe9a795ce5eab043f4564f77 # master
         with:
           oss-fuzz-project-name: "prometheus"
           dry-run: false
       - name: Run Fuzzers
-        uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@cafd7a0eb8ecb4e007c56897996a9b65c49c972f # master
+        uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@a0ac9cb62cbbbec7fe9a795ce5eab043f4564f77 # master
         # Note: Regularly check for updates to the pinned commit hash at:
         # https://github.com/google/oss-fuzz/tree/master/infra/cifuzz/actions/run_fuzzers
         with: