Upgrade to GitHub-native Dependabot (#528)

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -0,0 +1,44 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: weekly
+    time: "11:00"
+  ignore:
+  - dependency-name: cloud.google.com/go
+    versions:
+    - ">= 0.57.a, < 0.58"
+  - dependency-name: github.com/go-logr/logr
+    versions:
+    - ">= 0.2.a, < 0.3"
+  - dependency-name: github.com/go-logr/zapr
+    versions:
+    - ">= 0.2.a, < 0.3"
+  - dependency-name: github.com/googleapis/gnostic
+    versions:
+    - ">= 0.4.a, < 0.5"
+  - dependency-name: github.com/googleapis/gnostic
+    versions:
+    - ">= 0.5.a, < 0.6"
+  - dependency-name: github.com/qri-io/jsonschema
+    versions:
+    - ">= 0.2.a, < 0.3"
+  - dependency-name: k8s.io/api
+    versions:
+    - ">= 0.19.a, < 0.20"
+  - dependency-name: k8s.io/apimachinery
+    versions:
+    - ">= 0.19.a, < 0.20"
+  - dependency-name: k8s.io/client-go
+    versions:
+    - ">= 0.19.a, < 0.20"
+  - dependency-name: sigs.k8s.io/controller-runtime
+    versions:
+    - ">= 0.5.a, < 0.6"
+  - dependency-name: sigs.k8s.io/controller-runtime
+    versions:
+    - ">= 0.8.a, < 0.9"
+  - dependency-name: k8s.io/apimachinery
+    versions:
+    - 0.20.4