Update dependency com.pinterest:ktlint to v0.51.0-FINAL

Author: renovate[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ google-service = "4.4.1"
 
 kotlin-detekt = "1.23.6"
 kotlin-ktlint-gradle = "11.6.1"
-kotlin-ktlint-source = "0.50.0"
+kotlin-ktlint-source = "0.51.0-FINAL"
 
 kotlinx-coroutines = "1.8.0"
 kotlinx-datetime = "0.5.0"