feat: migrate from cap 8 to cap 9

[jcesarmobile]

• Upgrade Capacitor core to next
• Upgrade Gradle to 9.5.1
• Upgrade AGP to 9.2.1
• Upgrade gms to 4.5.0
• Upgrade Android minSDK to 26 and compileSDK to 37
• Remove Android targetSDK
• Upgrade AndroidX lib versions
• Migrate core-ktx to core
• remove kotlin plugin and related gradle entries (kotlin_version, kotlin-gradle-plugin, kotlin-stdlib, etc.)
• Upgrade iOS deployment target to 16.0

Pending work to do in a future PR

• Update next to final
• Update plugin version from 8 to 9 (didn't do it now as we update our plugin versions manually and we are doing next releases)
• Update more Android dependencies after we update our plugin dependencies
• Update node package dependencies if we update them in the plugin template