Introduce pr-dependabot job to generate changes on bump

Signed-off-by: Danil Grigorev <[email protected]>

.github/workflows/pr-dependabot.yaml

@@ -0,0 +1,49 @@
+name: PR dependabot code generation and go modules fix
+
+# This action runs on other PRs opened by dependabot. It updates modules and generated code on PRs opened by dependabot.
+on:
+  pull_request:
+    branches:
+      - dependabot/**
+  push:
+    branches:
+      - dependabot/**
+  workflow_dispatch:
+
+permissions:
+  contents: write # Allow to update the PR.
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # tag=v4.1.1
+    - name: Calculate go version
+      id: vars
+      run: echo "go_version=$(make go-version)" >> $GITHUB_OUTPUT
+    - name: Set up Go
+      uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # tag=v5.0.0
+      with:
+        go-version: ${{ steps.vars.outputs.go_version }}
+    - uses: actions/cache@ab5e6d0c87105b4c9c2047343972218f562e4319 # tag=v4.0.1
+      name: Restore go cache
+      with:
+        path: |
+          ~/.cache/go-build
+          ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+    - name: Update all modules
+      run: make modules
+    - name: Update generated code
+      run: make generate
+    - uses: EndBug/add-and-commit@a94899bca583c204427a224a7af87c02f9b325d5 # tag=v9.1.4
+      name: Commit changes
+      with:
+        author_name: dependabot[bot]
+        author_email: 49699333+dependabot[bot]@users.noreply.github.com
+        default_author: github_actor
+        message: 'Update generated code'

Makefile

@@ -548,3 +548,6 @@ test-e2e-run: $(GINKGO) $(ENVSUBST) $(HELM) ## Run e2e tests
 		-e2e.config="$(E2E_CONF_FILE_ENVSUBST)"  -e2e.components=$(RELEASE_DIR)/operator-components.yaml \
 		-e2e.skip-resource-cleanup=$(SKIP_CLEANUP) -e2e.use-existing-cluster=$(SKIP_CREATE_MGMT_CLUSTER) \
 		-e2e.helm-binary-path=$(HELM) -e2e.chart-path=$(CHART_PACKAGE_DIR)/cluster-api-operator-$(HELM_CHART_TAG).tgz $(E2E_ARGS)
+
+go-version: ## Print the go version we use to compile our binaries and images
+	@echo $(GO_VERSION)