build(deps): bump google/osv-scanner-action in the github-actions group

Bumps the github-actions group with 1 update: [google/osv-scanner-action](https://github.com/google/osv-scanner-action).


Updates `google/osv-scanner-action` from 1.8.3 to 1.8.4
- [Release notes](https://github.com/google/osv-scanner-action/releases)
- [Commits](google/osv-scanner-action@c615bb5...678a866)

---
updated-dependencies:
- dependency-name: google/osv-scanner-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/osv-scanner.yml

@@ -31,7 +31,7 @@ permissions:
 jobs:
   scan-scheduled:
     if: ${{ github.event_name == 'push' || github.event_name == 'schedule' }}
-    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable.yml@c615bb556a9a61495d218c7d439e7c8abbbfb151" # v1.8.3
+    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable.yml@678a866dcba398c8ed0124a09928d250f187b52a" # v1.8.4
     with:
       # Example of specifying custom arguments
       scan-args: |-
@@ -40,7 +40,7 @@ jobs:
         ./
   scan-pr:
     if: ${{ github.event_name == 'pull_request' || github.event_name == 'merge_group' }}
-    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable-pr.yml@c615bb556a9a61495d218c7d439e7c8abbbfb151" # v1.8.3
+    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable-pr.yml@678a866dcba398c8ed0124a09928d250f187b52a" # v1.8.4
     with:
       # Example of specifying custom arguments
       scan-args: |-