Bump actions/setup-node from 4 to 6 in /.github/workflows (#200)

* Bump actions/setup-node from 4 to 6 in /.github/workflows

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v4...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Pin version

Signed-off-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kim Brose <2803622+HarHarLinks@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/astro-check.yaml

@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd #v6
       with:
         persist-credentials: false
-    - uses: actions/setup-node@v4
+    - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e #v6
       with:
         node-version: "22"
     - uses: pnpm/action-setup@0e279bb959325dab635dd2c09392533439d90093 #v6.0.8