sync dependency definitions

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Author: dependabot[bot]

gradle/libs.versions.toml

@@ -21,7 +21,7 @@ coil = "1.3.2"
 compileSdk = "30"
 dependencyAnalysis = "0.78.0"
 detekt = "1.20.0"
-dokka = "1.6.10"
+dokka = "1.6.20"
 exhaustive = "0.2.0"
 
 google-accompanist = "0.18.0"