chore(deps): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v6)

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

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

.github/workflows/goreleaser.yml

@@ -23,7 +23,7 @@ jobs:
           go-version: "^1"
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v7
+        uses: goreleaser/goreleaser-action@v6
         with:
           # either 'goreleaser' (default) or 'goreleaser-pro'
           distribution: goreleaser

.github/workflows/stable.yml

@@ -71,12 +71,12 @@ jobs:
 
       - run: echo hello > world.txt
 
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: my-artifact
           path: world.txt
 
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v5
         with:
           name: my-artifact
           path: distfiles

.github/workflows/testing.yml

@@ -71,12 +71,12 @@ jobs:
 
       - run: echo hello > world.txt
 
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@v4
         with:
           name: my-artifact
           path: world.txt
 
-      - uses: actions/download-artifact@v8
+      - uses: actions/download-artifact@v5
         with:
           name: my-artifact
           path: distfiles