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] <support@github.com>

.github/workflows/main-push-regen.yaml

@@ -41,7 +41,7 @@ jobs:
           java-version: 17
           cache: 'maven'
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: 1.20.x
       - name: Build catalog 1st Run

.github/workflows/validate.yaml

@@ -47,7 +47,7 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
     - name: Install Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       with:
         go-version: 1.20.x
     - name: Run Validator