ci: bump actions/setup-go from 4 to 5 (#49)

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/release.yaml

@@ -18,7 +18,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: "1.21"
 

.github/workflows/tests.yaml

@@ -14,7 +14,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: "1.21"
 
@@ -36,7 +36,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: "1.21"
 
@@ -65,7 +65,7 @@ jobs:
         run: git fetch --prune --unshallow
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: "1.21"