build(deps): bump slack-sdk in /.github/actions/pr_notifier

Bumps [slack-sdk](https://github.com/slackapi/python-slack-sdk) from 3.23.0 to 3.25.0.
- [Release notes](https://github.com/slackapi/python-slack-sdk/releases)
- [Changelog](https://github.com/slackapi/python-slack-sdk/blob/main/docs-v2/changelog.html)
- [Commits](slackapi/python-slack-sdk@v3.23.0...v3.25.0)

---
updated-dependencies:
- dependency-name: slack-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/actions/pr_notifier/requirements.txt

@@ -186,7 +186,9 @@ pygithub==2.1.1 \
 pyjwt[crypto]==2.4.0 \
     --hash=sha256:72d1d253f32dbd4f5c88eaf1fdc62f3a19f676ccbadb9dbc5d07e951b2b26daf \
     --hash=sha256:d42908208c699b3b973cbeb01a969ba6a96c821eefb1c5bfe4c390c01d67abba
-    # via pygithub
+    # via
+    #   pygithub
+    #   pyjwt
 pynacl==1.4.0 \
     --hash=sha256:06cbb4d9b2c4bd3c8dc0d267416aaed79906e7b33f114ddbf0911969794b1cc4 \
     --hash=sha256:11335f09060af52c97137d4ac54285bcb7df0cef29014a1a4efe64ac065434c4 \
@@ -229,9 +231,9 @@ six==1.16.0 \
     # via
     #   pynacl
     #   python-dateutil
-slack-sdk==3.23.0 \
-    --hash=sha256:2a8513505cced20ceee22b5b49c11d9545caa6234b56bf0ad47133ea5b357d10 \
-    --hash=sha256:9d6ebc4ff74e7983e1b27dbdb0f2bb6fc3c2a2451694686eaa2be23bbb085a73
+slack-sdk==3.25.0 \
+    --hash=sha256:172e1b315994c61cbeb17568da0822590c6883be05b96a980e64e7f3db146da7 \
+    --hash=sha256:e48371dd41732590e9fca1d0ba1c684bb7370c16b0160b75809ba9d374b46ca8
     # via -r requirements.in
 typing-extensions==4.8.0 \
     --hash=sha256:8f92fc8806f9a6b641eaa5318da32b44d401efaac0f6678c9bc448ba3605faa0 \