Bump Pitest from 1.4.8 to 1.4.9 (#1003)

* Bump pitest-maven from 1.4.8 to 1.4.9

Bumps [pitest-maven](https://github.com/hcoles/pitest) from 1.4.8 to 1.4.9.
- [Release notes](https://github.com/hcoles/pitest/releases)
- [Commits](hcoles/pitest@pitest-parent-1.4.8...pitest-parent-1.4.9)

* Bump pitest-junit5-plugin from 0.8 to 0.9 (#1004)

Bumps [pitest-junit5-plugin](https://github.com/pitest/pitest-junit5-plugin) from 0.8 to 0.9.
- [Release notes](https://github.com/pitest/pitest-junit5-plugin/releases)
- [Commits](pitest/pitest-junit5-plugin@pitest-junit5-plugin-0.8...pitest-junit5-plugin-0.9)

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

Author: dependabot-preview[bot]

exonum-light-client/pom.xml

@@ -300,12 +300,12 @@
       <plugin>
         <groupId>org.pitest</groupId>
         <artifactId>pitest-maven</artifactId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <dependencies>
           <dependency>
             <groupId>org.pitest</groupId>
             <artifactId>pitest-junit5-plugin</artifactId>
-            <version>0.8</version>
+            <version>0.9</version>
           </dependency>
         </dependencies>
       </plugin>