ci(workflows): Update unit test and lint workflow

Makes the unit test and lint workflow look more like the one in CATs:
https://github.com/cloudfoundry/cf-acceptance-tests/blob/9a563429d08eb967a093a78067d8348a20cbeadc/.github/workflows/ci.yml.

Also, bumps dependencies, which might hopefully fix this workflow. I've
noticed that it's not been running lately.

Author: ctlong

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on:
+  push:
+    branches: [ 'main' ]
+  pull_request:
+    branches: [ 'main' ]
+
+jobs:
+  unit-test:
+    name: Unit Test
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+    - name: Run ginkgo tests
+      run: go run github.com/onsi/ginkgo/v2/ginkgo -r --procs=3 --compilers=3 --randomize-all --randomize-suites --fail-on-pending --keep-going --race --trace
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+    - name: golangci-lint
+      uses: golangci/golangci-lint-action@v7
+      with:
+        version: v2.0