Bump actions/setup-go from 4 to 5 (signalfx#1066)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/functional_test_v2.yaml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: ~1.20.8
           cache: false
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: ~1.20.8
           cache: false
@@ -127,7 +127,7 @@ jobs:
       - name: Checkout previous main commit if in main
         if: github.event_name != 'pull_request'
         run: cd base && git checkout HEAD^
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version: ~1.20.8
           cache: false

.github/workflows/validate-changelog.yaml

@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
 
       - name: Install chloggen
         run: make install-tools