Update dependency io.netty:netty-bom to v4.2.7.Final (#954)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -122,7 +122,7 @@
     <maven-plugin-sisu.version>0.3.5</maven-plugin-sisu.version>
     <maven-shared-utils.version>3.4.2</maven-shared-utils.version>
     <maven.version>3.8.8</maven.version>
-    <netty.version>4.2.6.Final</netty.version>
+    <netty.version>4.2.7.Final</netty.version>
     <plexus-utils.version>3.6.0</plexus-utils.version>
     <plugin-exec.version>3.6.1</plugin-exec.version>
     <slf4j.version>2.0.17</slf4j.version>