Don't force a specific logger version by setting scope to provided (#27)

Author: felixbarny

log4j-ecs-layout/pom.xml

@@ -25,6 +25,7 @@
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
             <version>1.2.17</version>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>

log4j2-ecs-layout/pom.xml

@@ -50,6 +50,7 @@
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
             <version>2.12.0</version>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>

logback-ecs-encoder/pom.xml

@@ -25,6 +25,7 @@
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
             <version>1.2.3</version>
+            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>