Upgrade to GitHub-native Dependabot

Author: dependabot-preview[bot]

.github/dependabot.yml

@@ -0,0 +1,37 @@
+version: 2
+updates:
+- package-ecosystem: pip
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "11:00"
+  open-pull-requests-limit: 10
+  reviewers:
+  - ethanwu10
+  labels:
+  - kind/dependencies
+  ignore:
+  - dependency-name: pre-commit
+    versions:
+    - 2.10.0
+    - 2.11.0
+    - 2.12.0
+  - dependency-name: sphinx
+    versions:
+    - 3.4.3
+    - 3.5.0
+    - 3.5.1
+    - 3.5.2
+    - 3.5.3
+  - dependency-name: flake8-bugbear
+    versions:
+    - 21.3.1
+    - 21.3.2
+  - dependency-name: docker
+    versions:
+    - 4.4.1
+    - 4.4.2
+    - 4.4.3
+  - dependency-name: mypy
+    versions:
+    - "0.800"