ci: update GitHub Actions dependencies

- Upgrade `actions/checkout` to v4 in both `stylua` and `selene` jobs.
- Update `JohnnyMorganz/stylua-action` to v4.
  - Bump Stylua version to v2.0.2.
- Update `NTBBloodbath/selene-action` to v1.0.0.
  - Bump Selene version to v0.27.1.

Author: daephx

.github/workflows/ci.yml

@@ -9,19 +9,19 @@ jobs:
   stylua:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: JohnnyMorganz/stylua-action@v3
+      - uses: actions/checkout@v4
+      - uses: JohnnyMorganz/stylua-action@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          version: v0.17.1
+          version: v2.0.2
           args: --check .
 
   selene:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: NTBBloodbath/[email protected]
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          version: 0.25.0
+          version: 0.27.1
           args: --display-style=quiet .