climaemet 1.2.1

• On aemet_monthly_period(extract_metadata = TRUE) honor the start and
  end parameters.
• Update docs.

What's Changed

• Bump actions/checkout from 3 to 4 by @dependabot in #46
• Bump github/codeql-action from 2 to 3 by @dependabot in #47
• Add revdep check by @dieghernan in #48

Full Changelog: v1.2.0...v1.2.1