Release 9.1.0

[langsmith]

CHANGELOG

• Bumped Maps SDK to 9.1.0 (Bumped Maps SDK to 9.1.0 #1324)
• Fixed tools:context in activity_basic_simple_kotlin.xml (Fixed tools:context in activity_basic_simple_kotlin.xml #1318 #1320)
• Bumped scalebar plugin to 0.5.0 (Scalebar plugin bump to 0.5.0 #1323)
• Places plugin 0.11.0 bump (Places plugin 0.11.0 bump #1322)
• Bumped Java SDK to 5.1.0 (Bumped Java SDK to 5.1.0 #1319)
• Bumped plugin dependencies and prefix for v9 plugin release (Bumped plugin dependencies and prefix for v9 plugin release #1309)

Release checklist

• Cut the release branch
• Update the CHANGELOG.md on the release branch
• Update the default.txt file on the release branch
• Merge the release branch into master
• Tag 9.1.0 in https://github.com/mapbox/mapbox-android-demo/releases