Bump log4j compilation version (#2004)

Author: trask

logging/log4j2/build.gradle

@@ -33,8 +33,8 @@ projectPomDescription = "This module provides a $project.msftAppInsights appende
 // endregion Publishing properties
 
 dependencies {
-    compileOnly group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.0'
-    annotationProcessor group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.0'
+    compileOnly group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.15.0'
+    annotationProcessor group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.15.0'
 
-    testImplementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.0'
+    testImplementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.15.0'
 }

logging/log4j2/gradle/dependency-locks/compileClasspath.lockfile

@@ -16,8 +16,8 @@ eu.infomas:annotation-detector:3.0.5
 org.apache.commons:commons-lang3:3.7
 org.apache.httpcomponents:httpclient:4.5.3
 org.apache.httpcomponents:httpcore:4.4.6
-org.apache.logging.log4j:log4j-api:2.11.0
-org.apache.logging.log4j:log4j-core:2.11.0
+org.apache.logging.log4j:log4j-api:2.15.0
+org.apache.logging.log4j:log4j-core:2.15.0
 org.checkerframework:checker-compat-qual:2.5.2
 org.codehaus.mojo:animal-sniffer-annotations:1.17
 xmlpull:xmlpull:1.1.3.1