Bump golangci/golangci-lint-action from 2 to 3 (#61)

* Bump golangci/golangci-lint-action from 2 to 3

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from 2 to 3.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](https://github.com/golangci/golangci-lint-action/compare/v2...v3)

---
updated-dependencies:
- dependency-name: golangci/golangci-lint-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

* Run `go get` before `golangci-lint`

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Joshua Spence <josh@spence.com.au>

.github/workflows/ci.yaml

@@ -51,7 +51,16 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - uses: "actions/checkout@v2"
-      - uses: "golangci/golangci-lint-action@v2"
+      - uses: "actions/cache@v2"
+        with:
+          path: "~/go/pkg/mod"
+          key: "${{ runner.os }}-gomod-${{ hashFiles('**/go.sum') }}"
+
+      - uses: "actions/setup-go@v2"
+        with:
+          go-version: "${{ env.GO_VERSION }}"
+      - run: "go get ./..."
+      - uses: "golangci/golangci-lint-action@v3"
 
   test:
     needs: "build"