Bump checkstyle from 8.23 to 8.26

Bumps [checkstyle](https://github.com/checkstyle/checkstyle) from 8.23 to 8.26.
- [Release notes](https://github.com/checkstyle/checkstyle/releases)
- [Commits](https://github.com/checkstyle/checkstyle/compare/checkstyle-8.23...checkstyle-8.26)

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index fea1805..4efae75 100644
--- a/pom.xml
+++ b/pom.xml
@@ -386,7 +386,7 @@
                         <dependency>
                             <groupId>com.puppycrawl.tools</groupId>
                             <artifactId>checkstyle</artifactId>
-                            <version>8.23</version>
+                            <version>8.26</version>
                         </dependency>
                     </dependencies>
                     <configuration>