Analysis: Suppress kotlin stdlib's decapitalize deprecated warning

Warning Messages: "'decapitalize(Locale): String' is deprecated.
Use replaceFirstChar instead."

This deprecated warning is suppressed, that is, instead of it being
resolved, since using 'replaceFirstChar { ... }' is a bit complicated
and it would need a bit more thought.

Author: ParaskP7

libs/processors/src/main/java/org/wordpress/android/processor/RemoteConfigCheckBuilder.kt

@@ -11,6 +11,7 @@ import com.squareup.kotlinpoet.TypeSpec
 import java.util.Locale
 
 class RemoteConfigCheckBuilder(private val remoteFeatures: List<TypeName>) {
+    @Suppress("DEPRECATION")
     fun getContent(): FileSpec {
         val remoteFeaturesWithNames = remoteFeatures.map {
             it.toString()