appcompat upgrade

[Froze-N-Milk]

panels currently depends on com.google.android.material:material:1.12.0:

ftcontrol-panels/library/Panels/build.gradle.kts

Line 55 in 1372d31

implementation("com.google.android.material:material:1.12.0")

which transitively depends on a higher version of appcompat (1.6.1), and then causes build issues for users installing panels.