deps: update dependency org.apache.logging.log4j:log4j-slf4j-impl to v2.20.0 (#3974)

Author: renovate-bot

hbase-migration-tools/mirroring-client/bigtable-hbase-mirroring-client-2.x-parent/bigtable-hbase-mirroring-client-1.x-2.x-integration-tests/pom.xml

@@ -316,7 +316,7 @@ limitations under the License.
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-slf4j-impl</artifactId>
-      <version>2.19.0</version>
+      <version>2.20.0</version>
       <scope>test</scope>
     </dependency>
 

hbase-migration-tools/mirroring-client/bigtable-hbase-mirroring-client-2.x-parent/bigtable-hbase-mirroring-client-2.x-integration-tests/pom.xml

@@ -327,7 +327,7 @@ limitations under the License.
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-slf4j-impl</artifactId>
-      <version>2.19.0</version>
+      <version>2.20.0</version>
       <scope>test</scope>
     </dependency>