Bump pitest-command-line from 1.6.2 to 1.6.4

Bumps [pitest-command-line](https://github.com/hcoles/pitest) from 1.6.2 to 1.6.4.
- [Release notes](https://github.com/hcoles/pitest/releases)
- [Commits](hcoles/pitest@1.6.2...1.6.4)

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -54,7 +54,7 @@ subprojects {
             dependency 'org.junit.vintage:junit-vintage-engine:5.7.1'
             dependency 'org.mockito:mockito-core:3.8.0'
             dependency 'org.pitest:pitest-junit5-plugin:0.12'
-            dependency 'org.pitest:pitest-command-line:1.6.2'
+            dependency 'org.pitest:pitest-command-line:1.6.4'
             dependency 'org.projectlombok:lombok:1.18.18'
         }
     }