Bump assertj-core from 3.23.0 to 3.23.1

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.23.0 to 3.23.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](https://github.com/assertj/assertj-core/compare/assertj-core-3.23.0...assertj-core-3.23.1)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -47,7 +47,7 @@ ext {
         "mybatis-spring-boot-starter": "org.mybatis.spring.boot:mybatis-spring-boot-starter:${mybatisSpringBootStarterVersion}",
         //test
         "spring-test"                : "org.springframework:spring-test:${springVersion}",
-        "assertj-core"               : "org.assertj:assertj-core:3.23.0",
+        "assertj-core"               : "org.assertj:assertj-core:3.23.1",
         "junit-jupiter"              : "org.junit.jupiter:junit-jupiter:${junitVersion}",
         "fastjson"                   : "com.alibaba:fastjson:2.0.5",
         "jackson"                    : "com.fasterxml.jackson.core:jackson-databind:2.13.3",