CRINGE-58: Reduce Dependabot cadence to monthly.

[smarnach]

https://mozilla-hub.atlassian.net/browse/CRINGE-58

[leplatrem]

Note that you can also group development dependencies or minor updates into single PRs. (dev deps are not critical, and minor are less likely to break stuff)

version: 2
updates:
- package-ecosystem: pip
  directory: "/"
  schedule:
    interval: weekly
    day: sunday
    timezone: UTC
  groups:
    production-dependency-patches:
      dependency-type: "production"
      update-types: ["patch"]
    development-dependencies:
      dependency-type: "development"
      update-types: ["major", "minor", "patch"]

[smarnach]

Note that you can also group development dependencies or minor updates into single PRs. (dev deps are not critical, and minor are less likely to break stuff)

Yeah, I heard about that, but I'll look into it another time. Too much going on right now.