build(deps): bump actions/setup-go from 4 to 5

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 4 to 5.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v4...v5)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/nightly.yml

@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: K3S
     steps:
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: '1.21.x'
     - name: Install k3d

.github/workflows/tests.yml

@@ -36,7 +36,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: '0'
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: '1.21.x'
     - name: golangci-lint
@@ -198,7 +198,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: K3S
     steps:
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: '1.21.x'
     - name: Install k3d
@@ -228,7 +228,7 @@ jobs:
     env:
       RESULT_DIR: ${{ github.workspace }}/argo-workflow/
     steps:
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version: '1.21.x'
     - name: Install k3d
@@ -273,7 +273,7 @@ jobs:
     runs-on: ubuntu-22.04
     timeout-minutes: 10
     steps:
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: '1.21.x'
       - uses: actions/checkout@v4