Bump lombok-maven-plugin from 1.18.6.0 to 1.18.8.1

Bumps [lombok-maven-plugin](https://github.com/awhitford/lombok.maven) from 1.18.6.0 to 1.18.8.1.
- [Release notes](https://github.com/awhitford/lombok.maven/releases)
- [Commits](awhitford/lombok.maven@lombok-maven-1.18.6.0...lombok-maven-1.18.8.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

exonum-light-client/pom.xml

@@ -286,7 +286,7 @@
       <plugin>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok-maven-plugin</artifactId>
-        <version>1.18.6.0</version>
+        <version>1.18.8.1</version>
         <executions>
           <execution>
             <phase>generate-sources</phase>