ci: move actions to their Node 24 major versions

.github/workflows/proto.yml

@@ -17,7 +17,7 @@ jobs:
   contract:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           persist-credentials: false
           # buf breaking compares against main, which needs real history.
@@ -31,12 +31,12 @@ jobs:
         with:
           setup_only: true
 
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v7
         with:
           go-version: stable
           cache-dependency-path: server/go.sum
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: 24
           cache: npm