Bump impsort version to 1.8 (#119)

diff --git a/pom.xml b/pom.xml
index c97bbde..6c9db96 100644
--- a/pom.xml
+++ b/pom.xml
@@ -215,7 +215,7 @@
       <plugin>
         <groupId>net.revelc.code</groupId>
         <artifactId>impsort-maven-plugin</artifactId>
-        <version>1.7.0</version>
+        <version>1.8.0</version>
         <configuration>
           <removeUnused>true</removeUnused>
           <groups>java.,javax.,jakarta.,org.,com.</groups>