fix(deps): update kotlin (#4444)

* fix(deps): update kotlin

* Fix 'exhaustive when' issue

* Fix lint issues

* Fix issue in merge conflict resolving.

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Jorge Martín <jorgem@element.io>
Co-authored-by: Benoit Marty <benoitm@element.io>

.idea/kotlinc.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="2.1.10" />
+    <option name="version" value="2.1.20" />
   </component>
 </project>

gradle/libs.versions.toml

@@ -4,9 +4,9 @@
 [versions]
 # Project
 android_gradle_plugin = "8.9.1"
-kotlin = "2.1.10"
+kotlin = "2.1.20"
 kotlinpoet = "2.1.0"
-ksp = "2.1.10-1.0.31"
+ksp = "2.1.20-1.0.31"
 firebaseAppDistribution = "5.1.1"
 
 # AndroidX

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/timeline/item/event/TimelineEventContentMapper.kt

@@ -22,7 +22,6 @@ import io.element.android.libraries.matrix.api.timeline.item.event.RoomMembershi
 import io.element.android.libraries.matrix.api.timeline.item.event.StateContent
 import io.element.android.libraries.matrix.api.timeline.item.event.StickerContent
 import io.element.android.libraries.matrix.api.timeline.item.event.UnableToDecryptContent
-import io.element.android.libraries.matrix.api.timeline.item.event.UnknownContent
 import io.element.android.libraries.matrix.api.timeline.item.event.UtdCause
 import io.element.android.libraries.matrix.impl.media.map
 import io.element.android.libraries.matrix.impl.poll.map
@@ -110,7 +109,6 @@ class TimelineEventContentMapper(
                 }
                 is TimelineItemContent.CallInvite -> LegacyCallInviteContent
                 is TimelineItemContent.CallNotify -> CallNotifyContent
-                else -> UnknownContent
             }
         }
     }