build(deps): bump actions/setup-go from 5 to 6

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

.github/workflows/apidiff.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version-file: go.work
       - name: Execute go-apidiff

.github/workflows/go.yml

@@ -36,7 +36,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go
@@ -56,7 +56,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go
@@ -74,7 +74,7 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v5
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go
@@ -92,7 +92,7 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v5
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go
@@ -110,7 +110,7 @@ jobs:
     - name: Check out code into the Go module directory
       uses: actions/checkout@v5
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go

.github/workflows/release.yaml

@@ -20,7 +20,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version-file: go.work
       id: go