ci: update node to v22

Author: tdstein

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ jobs:
       - run: uv python install
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - run: make build
       - run: make install
       - id: release

.github/workflows/site.yaml

@@ -44,7 +44,7 @@ jobs:
       - run: uv python install
       - uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 22
       - uses: quarto-dev/quarto-actions/setup@v2
       - run: make dev
       - run: make docs