Update log4j2 monorepo to v2.26.0 (#747)

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

Author: renovate[bot]

build.gradle

@@ -49,7 +49,7 @@ def versions = [
   sonarPitest         : '0.5',
   junitPitest         : '1.2.1',
   jackson             : '2.19.2',
-  log4j               : '2.25.3',
+  log4j               : '2.26.0',
   logback             : '1.5.32',
   bouncycastle        : '1.83',
   testcontainers      : '1.21.4',