chore(ci): bump action-slack-notify and public-shared-actions (#14181)

Kong/action-slack-notify to v2_node20
Kong/public-shared-actions/security-actions/scan-docker-image to v4.0.1

KAG-6149

(cherry picked from commit e5f959d)

.github/workflows/label-schema.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Schema change label found
-      uses: rtCamp/action-slack-notify@c33737706dea87cd7784c687dadc9adf1be59990 # v2
+      uses: Kong/action-slack-notify@bd750854aaf93c5c6f69799bf813c40e7786368a # v2_node20
       continue-on-error: true
       env:
         SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_SCHEMA_CHANGE }}

.github/workflows/release.yml

@@ -492,7 +492,7 @@ jobs:
     - name: Scan AMD64 Image digest
       id: sbom_action_amd64
       if: steps.image_manifest_metadata.outputs.amd64_sha != ''
-      uses: Kong/public-shared-actions/security-actions/scan-docker-image@28d20a1f492927f35b00b317acd78f669c45f88b # v2.7.3
+      uses: Kong/public-shared-actions/security-actions/scan-docker-image@a5b1cfac7d55d8cf9390456a1e6799425e28840d # v4.0.1
       with:
         asset_prefix: kong-${{ needs.metadata.outputs.commit-sha }}-${{ matrix.label }}-linux-amd64
         image: ${{ needs.metadata.outputs.prerelease-docker-repository }}:${{ needs.metadata.outputs.commit-sha }}-${{ matrix.label }}
@@ -501,7 +501,7 @@ jobs:
     - name: Scan ARM64 Image digest
       if: steps.image_manifest_metadata.outputs.manifest_list_exists == 'true' && steps.image_manifest_metadata.outputs.arm64_sha != ''
       id: sbom_action_arm64
-      uses: Kong/public-shared-actions/security-actions/scan-docker-image@28d20a1f492927f35b00b317acd78f669c45f88b # v2.7.3
+      uses: Kong/public-shared-actions/security-actions/scan-docker-image@a5b1cfac7d55d8cf9390456a1e6799425e28840d # v4.0.1
       with:
         asset_prefix: kong-${{ needs.metadata.outputs.commit-sha }}-${{ matrix.label }}-linux-arm64
         image: ${{ needs.metadata.outputs.prerelease-docker-repository }}:${{ needs.metadata.outputs.commit-sha }}-${{ matrix.label }}