Bump 8398a7/action-slack from 3.15.0 to 3.15.1 (#3734)

Bumps [8398a7/action-slack](https://github.com/8398a7/action-slack) from 3.15.0 to 3.15.1.
- [Release notes](https://github.com/8398a7/action-slack/releases)
- [Commits](8398a7/action-slack@bdc6f9d...fbd6aa5)

---
updated-dependencies:
- dependency-name: 8398a7/action-slack
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/notifications.yml

@@ -42,7 +42,7 @@ jobs:
             }
 
       - name: Send Notification
-        uses: 8398a7/action-slack@bdc6f9de222d3b7518e6cf99c4f3410f653cfde3 # v3.15.0
+        uses: 8398a7/action-slack@fbd6aa58ba854a740e11a35d0df80cb5d12101d8 # v3.15.1
         with:
           status: custom
           custom_payload: |

.github/workflows/updates-notification.yml

@@ -36,7 +36,7 @@ jobs:
           echo "date=$(date +%s)" >> $GITHUB_OUTPUT
           echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
       - name: Send Notification
-        uses: 8398a7/action-slack@bdc6f9de222d3b7518e6cf99c4f3410f653cfde3 # v3.15.0
+        uses: 8398a7/action-slack@fbd6aa58ba854a740e11a35d0df80cb5d12101d8 # v3.15.1
         with:
           status: custom
           custom_payload: |