Bump actions/setup-node from 5 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 5 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](https://github.com/actions/setup-node/compare/v5...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>

.github/workflows/check-uncommitted.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version-file: .nvmrc
           cache: 'npm'

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v5
 
-    - uses: actions/setup-node@v5
+    - uses: actions/setup-node@v6
       with:
         node-version-file: .nvmrc
         cache: 'npm'

.github/workflows/dependabot-build.yml

@@ -41,7 +41,7 @@ jobs:
           # Check out using an app token so any pushed changes will trigger checkruns
           token: ${{ steps.generate_token.outputs.token }}
 
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version-file: .nvmrc
           cache: 'npm'

.github/workflows/release-bump-version.yml

@@ -33,7 +33,7 @@ jobs:
           ref: "main"
           token: ${{ steps.generate_token.outputs.token }}
 
-      - uses: actions/setup-node@v5 # bin/bump-version needs npm
+      - uses: actions/setup-node@v6 # bin/bump-version needs npm
         with:
           node-version-file: .nvmrc
           cache: 'npm'