Bump actions/setup-go from 4 to 6

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

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

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3 # Checkout complement
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
       - name: "Run internal Complement tests"
@@ -56,7 +56,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3 # Checkout complement
 
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v6
         with:
           go-version-file: go.mod