Bump org.hamcrest:hamcrest-core from 1.3 to 3.0

Bumps [org.hamcrest:hamcrest-core](https://github.com/hamcrest/JavaHamcrest) from 1.3 to 3.0.
- [Release notes](https://github.com/hamcrest/JavaHamcrest/releases)
- [Changelog](https://github.com/hamcrest/JavaHamcrest/blob/master/CHANGES.md)
- [Commits](hamcrest/JavaHamcrest@hamcrest-java-1.3...v3.0)

---
updated-dependencies:
- dependency-name: org.hamcrest:hamcrest-core
  dependency-version: '3.0'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -338,7 +338,7 @@ dependencies {
 		exclude group: 'com.fasterxml.jackson.core'  // don't upgrade yet, breaks tests
 	}
 	testImplementation 'junit:junit:4.12'
-	testImplementation 'org.hamcrest:hamcrest-core:1.3'
+	testImplementation 'org.hamcrest:hamcrest-core:3.0'
 }
 
 task showTestClassPath {