CLOUD-727: Bump actions/setup-go from 5 to 6 (#1305)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 5 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Viacheslav Sarzhan <slava.sarzhan@percona.com>

Author: dependabot[bot]

.github/workflows/reviewdog.yml

@@ -5,7 +5,7 @@ jobs:
     name: runner / suggester / golangci-lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: '^1.25.1'
       - uses: actions/checkout@v5
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: '^1.25.1'
       - run: go install -v github.com/incu6us/goimports-reviser/v3@latest
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: '^1.25.1'
       - run: go install mvdan.cc/sh/v3/cmd/shfmt@latest

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
       - name: Clone the code
         uses: actions/checkout@v5
       - name: Setup Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: '^1.25.1'
       - uses: actions/checkout@v5