(v4.0.0): Bump springCloudContractVersion from 4.0.3 to 4.0.4

Bumps `springCloudContractVersion` from 4.0.3 to 4.0.4.

Updates `org.springframework.cloud:spring-cloud-contract-dependencies` from 4.0.3 to 4.0.4
- [Release notes](https://github.com/spring-cloud/spring-cloud-build/releases)
- [Commits](spring-cloud/spring-cloud-build@v4.0.3...v4.0.4)

Updates `org.springframework.cloud.contract` from 4.0.3 to 4.0.4

---
updated-dependencies:
- dependency-name: org.springframework.cloud:spring-cloud-contract-dependencies
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.cloud.contract
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle

@@ -23,7 +23,7 @@ buildscript {
 		beanUtilsVersion = "1.9.4"
 
 		// Test Dependencies
-		springCloudContractVersion = "4.0.3"
+		springCloudContractVersion = "4.0.4"
 		javaHamcrestVersion = "2.0.0.0"
 		equalsVerifierVersion = "3.15"
 		findbugsVersion = "3.0.1"