Update log4j2 monorepo to v2.26.1 (#5826)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ jmh = "1.37"
 junit4 = "4.13.2"
 junit4Min = "4.12"
 ktlint = "1.8.0"
-log4j = "2.26.0"
+log4j = "2.26.1"
 opentest4j = "1.3.0"
 openTestReporting = "0.2.6"
 snapshotTests = "1.11.0"