upgrade log4j version to prevent vulnerability (#1724)

buildSrc/src/main/kotlin/Versions.kt

@@ -43,7 +43,7 @@ object Versions {
 
     const val logback = "1.2.5"
     const val slf4j = "1.7.32"
-    const val log4j = "2.14.1"
+    const val log4j = "2.15.0"
     const val asm = "9.1"
     const val difflib = "1.3.0"
     const val netty = "4.1.63.Final"
@@ -143,4 +143,4 @@ const val `caller-finder` = "io.github.karlatemp:caller:1.1.1"
 
 const val `android-runtime` = "com.google.android:android:${Versions.android}"
 const val `netty-all` = "io.netty:netty-all:${Versions.netty}"
-const val `bouncycastle` = "org.bouncycastle:bcprov-jdk15on:${Versions.bouncycastle}"
+const val `bouncycastle` = "org.bouncycastle:bcprov-jdk15on:${Versions.bouncycastle}"