Bump com.puppycrawl.tools:checkstyle from 10.25.1 to 10.26.1 (#723)

Author: dependabot[bot]

pom.xml

@@ -131,7 +131,7 @@
     <sisu-maven-plugin.version>0.3.5</sisu-maven-plugin.version>
 
     <!-- Plugin dependencies -->
-    <checkstyle.version>10.25.1</checkstyle.version>
+    <checkstyle.version>10.26.1</checkstyle.version>
     <maven-fluido-skin.version>2.1.0</maven-fluido-skin.version>
     <maven-surefire-junit5-tree-reporter.version>1.4.0</maven-surefire-junit5-tree-reporter.version>