ci: add node 22 to test matrix (#1115)

## This PR

- adds node 22 to the test matrix

### Notes

Node 22 is the current active LTS version. We still should target Node
18 but test Node 22.

Signed-off-by: Michael Beemer <[email protected]>

Author: beeme1mr

.github/workflows/pr-checks.yaml

@@ -18,6 +18,7 @@ jobs:
         node-version:
           - 18.x
           - 20.x
+          - 22.x
 
     steps:
       - uses: actions/checkout@v4