build(deps): bump @slack/web-api from 7.8.0 to 7.9.1 (#419)

Author: dependabot[bot]

package-lock.json

@@ -36,7 +36,7 @@
     "@actions/core": "^1.11.1",
     "@actions/github": "^6.0.0",
     "@slack/logger": "^4.0.0",
-    "@slack/web-api": "^7.8.0",
+    "@slack/web-api": "^7.9.1",
     "axios": "^1.8.2",
     "axios-retry": "^4.5.0",
     "flat": "^6.0.1",