Make dependabot ignore patch updates

[bdmendes]

Makes Dependabot less annoying by making it ignore patch updates.

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Merging #1100 (a6120fe) into develop (51d41b9) will not change coverage.
Report is 2 commits behind head on develop.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #1100   +/-   ##
=======================================
  Coverage       16%     16%           
=======================================
  Files          213     213           
  Lines         6535    6535           
=======================================
  Hits          1044    1044           
  Misses        5491    5491