Bump actions/setup-go from 3 to 4 (#177)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 3 to 4.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v3...v4)

---
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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Thane Thomson <thane@informal.systems>

.github/workflows/govulncheck.yml

@@ -15,7 +15,7 @@ jobs:
   govulncheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v4
         with:
           go-version: "1.20.3"
       - uses: actions/checkout@v3

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
         with:
           fetch-depth: 0
 
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v4
         with:
           go-version: '1.20'
 

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3.2.0
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v4
         with:
           go-version: "1.20"
       - run: make integration-test