ci: use Node 22 in tests workflow

Match engines required by semantic-release 25 stack.

Made-with: Cursor

Author: banshee86vr

.github/workflows/tests.yaml

@@ -22,7 +22,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           cache: "yarn"
 
       - name: Yarn install