Fix deprecation warning in KoverExtension

> Task :plugins:compileKotlin
    w: file:///.../plugins/src/main/kotlin/extension/KoverExtension.kt:70:109
    'capitalized(): String' is deprecated. This was never intended as a
    public API.

Signed-off-by: Joe Groocock <me@frebib.net>

plugins/src/main/kotlin/extension/KoverExtension.kt

@@ -58,7 +58,7 @@ fun Project.setupKover() {
     task("koverVerifyAll") {
         group = "verification"
         description = "Verifies the code coverage of all subprojects."
-        val dependencies = listOf(":app:koverVerifyGplayDebug") + koverVariants.map { ":app:koverVerify${it.capitalized()}" }
+        val dependencies = listOf(":app:koverVerifyGplayDebug") + koverVariants.map { ":app:koverVerify${it.replaceFirstChar(Char::titlecase)}" }
         dependsOn(dependencies)
 
     }