Upgrade to GitHub-native Dependabot

Author: dependabot-preview[bot]

.github/dependabot.yml

@@ -0,0 +1,17 @@
+version: 2
+updates:
+- package-ecosystem: pip
+ directory: "/"
+ schedule:
+ interval: daily
+ open-pull-requests-limit: 10
+ ignore:
+ - dependency-name: ruamel-yaml
+ versions:
+ - 0.16.12
+ - 0.16.13
+ - 0.17.0
+ - 0.17.2
+ - dependency-name: mypy
+ versions:
+ - "0.800"