Updated Brackets download recipe

[jps3]

• Original 'adobe/brackets' GitHub repo archived
• Changed repo to 'brackets-cont/brackets'
• Removed VersionSplitter processor step (not needed)

• Updated codesigning requirement string

  Note: The *.app in the DMG downloaded as v2.0.1 from this repo is still v1.14.2 in its Info.plist. A pre-release v2.1.0 was posted on 9-May-2022 ("Mac installer: coming soon...")