SH-1002 [CI] Update GitHub Actions versions (#7)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

Author: PetrHeinz

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
           - '3.3.4'
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v7
     - name: Set up Ruby & Rust
       uses: oxidize-rb/actions/setup-ruby-and-rust@v1
       with: