chore(deps): bump actions/checkout from 2 to 3 (#38)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  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>

Author: dependabot[bot]

.github/workflows/automerge.yml

@@ -14,7 +14,7 @@ jobs:
     outputs:
       status: ${{ steps.should-automerge.outputs.status }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         fetch-depth: 0
     - name: Check if we should automerge

.github/workflows/go-check.yml

@@ -11,7 +11,7 @@ jobs:
     env:
       RUNGOGENERATE: false
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: recursive
       - uses: actions/setup-go@v2

.github/workflows/go-test.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.os }}-latest
     name: ${{ matrix.os}} (go ${{ matrix.go }})
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: recursive
       - uses: actions/setup-go@v2