fix(deps): update dependency org.assertj:assertj-core to v3.26.0 (#3)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 junit = "5.10.2"
-assertj = "3.25.3"
+assertj = "3.26.0"
 mockito = "5.12.0"
 jackson = "2.17.1"
 apache-commons-text = "1.12.0"