chore: Dependabot suggested updates

[tuliomir]

Acceptance Criteria

• All suggestions from DependaBot should be implemented
• Default branch to be watched by DependaBot changed to dev

Implemented Dependabot suggestions

• chore(deps): bump cocoapods-downloader from 1.5.1 to 1.6.3 #184
• chore(deps): bump activesupport from 6.1.5 to 6.1.7.2 #246

Changelog summaries of updated dependencies

activesupport:

• Added protection for dangerous characters in names of tags and attributes
• Avoids regex backtracking

cocoapods-downloader

• 1.4.0 -> 1.5.0 - Branch encoding fix ( and patch on 1.5.1 )
• 1.5.1 -> 1.6.0 - Protection against command injection ( and patches 1.6.1, 1.6.2 and 1.6.3 refactoring and documenting this code )

concurrent-ruby

• 1.1.10 sets Ruby compatibility at 2.2 and many other minor adjustments
• 1.2.0 sets Ruby compatibility at 2.3 and other improvements

i18n

• 1.11.0 bugfixes and improvements
• 1.12.0 fix for a pluralization bug added

minitest

• 5.15.0 -> 5.16.0 enhancements and bug fixes ( patches 5.16.1, 5.16.2 and 5.16.3 with more bugfixes

tzinfo

• 2.0.5 improvements and security fixes
• 2.0.6 fixes deprecation warnings

zeitwerk

• 2.6.0 many improvements and six patches to fix or further improve the code up to 2.6.6

Security Checklist

• Make sure you do not include new dependencies in the project unless strictly necessary and do not include dev-dependencies as production ones. More dependencies increase the possibility of one of them being hijacked and affecting us.