Add changelog for 2.2.4 release (#3422)

CHANGELOG.md

@@ -1,3 +1,16 @@
+# 2.2.4
+> Published 28 February 2023
+
+### Bugfixes
+* Connect timeout is not respected when using the HttpRequestRetry plugin ([KTOR-5466](https://youtrack.jetbrains.com/issue/KTOR-5466))
+* URLs with underscore fail to parse correctly in HTTP client request ([KTOR-5591](https://youtrack.jetbrains.com/issue/KTOR-5591))
+* Routing: Wrong content-type results in 405 instead of 415 status code with two routes ([KTOR-5535](https://youtrack.jetbrains.com/issue/KTOR-5535))
+* Compressing the response will result in unexpected ERROR log output after processing in the StatusPages ([KTOR-5510](https://youtrack.jetbrains.com/issue/KTOR-5510))
+* Javadoc for Resources.kt cannot be compiled ([KTOR-5492](https://youtrack.jetbrains.com/issue/KTOR-5492))
+* ContentNegotiation: The "charset=UTF-8" part is added for the Content-Type header ([KTOR-3799](https://youtrack.jetbrains.com/issue/KTOR-3799))
+* kotlinx.serialization.SerializationException is lost for the classes that have generic type parameters ([KTOR-5448](https://youtrack.jetbrains.com/issue/KTOR-5448))
+* OkHttp: Cancelling while writing to ByteWriteChannel when overriding WriteChannelContent causes propagation of CancellationException to a caller ([KTOR-5518](https://youtrack.jetbrains.com/issue/KTOR-5518))
+
 # 2.2.3
 > Published 31 January 2023