dependency: Update dependency checkstyle to v10.26.1 (#1018)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

buildSrc/src/main/kotlin/eternalcode-java.gradle.kts

@@ -7,7 +7,7 @@ group = "com.eternalcode"
 version = "1.7.0-SNAPSHOT"
 
 checkstyle {
-    toolVersion = "10.21.4"
+    toolVersion = "10.26.1"
 
     configFile = file("${rootDir}/config/checkstyle/checkstyle.xml")
     configProperties["checkstyle.suppressions.file"] = "${rootDir}/config/checkstyle/suppressions.xml"