chore(deps): bump nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect

Bumps [nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect](https://github.com/ultraq/thymeleaf-layout-dialect) from 3.4.0 to 4.0.0.
- [Release notes](https://github.com/ultraq/thymeleaf-layout-dialect/releases)
- [Changelog](https://github.com/ultraq/thymeleaf-layout-dialect/blob/main/CHANGELOG.md)
- [Commits](ultraq/thymeleaf-layout-dialect@3.4.0...4.0.0)

---
updated-dependencies:
- dependency-name: nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build.gradle

@@ -42,7 +42,7 @@ dependencies {
     // Note: thymeleaf-extras-springsecurity6 is compatible with Spring Security 7
     // No springsecurity7 artifact exists yet - Thymeleaf team uses springsecurity6 for 6.x+
     compileOnly 'org.thymeleaf.extras:thymeleaf-extras-springsecurity6:3.1.3.RELEASE'
-    compileOnly 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect:3.4.0'
+    compileOnly 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect:4.0.0'
 
     // Other dependencies (moved to test scope for library)
     implementation 'org.passay:passay:1.6.6'