Update libs.versions.toml

Downgrade Kotlin version from 1.7.21 to 1.7.20

Author: mmoczkowski

gradle/libs.versions.toml

@@ -31,7 +31,7 @@ hilt = "2.44.2"
 hiltExt = "1.0.0"
 jacoco = "0.8.7"
 junit4 = "4.13.2"
-kotlin = "1.7.21"
+kotlin = "1.7.20"
 kotlinxCoroutines = "1.6.4"
 kotlinxDatetime = "0.4.0"
 kotlinxSerializationJson = "1.4.1"