build(deps): bump actions/setup-node from 4 to 6

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

examples.md

@@ -49,7 +49,7 @@
   with:
     path: |
       ~/.bun/install/cache
-    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
+    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}
 ```
 
 ### Windows
@@ -59,7 +59,7 @@
   with:
     path: |
       ~\.bun
-    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lock') }}
+    key: ${{ runner.os }}-bun-${{ hashFiles('**/bun.lockb') }}
 ```
 
 ## C# - NuGet