chore(deps): bump 8398a7/action-slack

Bumps [8398a7/action-slack](https://github.com/8398a7/action-slack) from 293f8dc0f9731ac35321056641cdef895f4f65f8 to 77eaa4f1c608a7d68b38af4e3f739dcd8cba273e.
- [Release notes](https://github.com/8398a7/action-slack/releases)
- [Commits](8398a7/action-slack@293f8dc...77eaa4f)

---
updated-dependencies:
- dependency-name: 8398a7/action-slack
  dependency-version: 77eaa4f1c608a7d68b38af4e3f739dcd8cba273e
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/run-cells-crit-flow-e2e-tests.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Notify on Wire if succeeded
         if: success()
         continue-on-error: true
-        uses: 8398a7/action-slack@293f8dc0f9731ac35321056641cdef895f4f65f8
+        uses: 8398a7/action-slack@77eaa4f1c608a7d68b38af4e3f739dcd8cba273e
         env:
           ENV: ${{ inputs.environment }}
           SLACK_WEBHOOK_URL: ${{ secrets.WIRE_CELLS_E2E_TEST_BOT_WEBHOOK_URL }}
@@ -71,7 +71,7 @@ jobs:
       - name: Notify on Wire if failed
         if: failure()
         continue-on-error: true
-        uses: 8398a7/action-slack@293f8dc0f9731ac35321056641cdef895f4f65f8
+        uses: 8398a7/action-slack@77eaa4f1c608a7d68b38af4e3f739dcd8cba273e
         env:
           ENV: ${{ inputs.environment }}
           SLACK_WEBHOOK_URL: ${{ secrets.WIRE_CELLS_E2E_TEST_BOT_WEBHOOK_URL }}