upgrade ktlint plugin to 12.0.3 (#4169)

There are some new rules, I think they mostly make sense, except for the
max line length which I had to disable because we are over it in a lot
of places.

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Co-authored-by: Goooler <wangzongler@gmail.com>

app/src/main/java/com/keylesspalace/tusky/entity/Poll.kt

@@ -9,7 +9,8 @@ data class Poll(
     val expired: Boolean,
     val multiple: Boolean,
     @SerializedName("votes_count") val votesCount: Int,
-    @SerializedName("voters_count") val votersCount: Int?, // nullable for compatibility with Pleroma
+    // nullable for compatibility with Pleroma
+    @SerializedName("voters_count") val votersCount: Int?,
     val options: List<PollOption>,
     val voted: Boolean,
     @SerializedName("own_votes") val ownVotes: List<Int>?