Pin GitHub Actions to SHA + Dependabot (#62)

* feat(repo): Add dependabot

* fix(ci): clean up

* fix(gh-actions): pin to sha

* fix(lint): fixing yaml lint

* feat(repo): Add dependabot

* fix(vagrant): up retry count to 60 because gh actions are sloooooow

.github/dependabot.yml

@@ -0,0 +1,11 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    rebase-strategy: "auto"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]