chore: restrict CI workflow to ubuntu-latest for testing

Author: bjohansebas

.github/workflows/update-snapshots.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest]
         node-version: [24]
 
     runs-on: ${{ matrix.os }}