deps: bump java-cfenv.version from 2.4.1 to 2.4.2 (#1813)

Bumps `java-cfenv.version` from 2.4.1 to 2.4.2.

Updates `java-cfenv` from 2.4.1 to 2.4.2
- [Release notes](https://github.com/pivotal-cf/java-cfenv/releases)
- [Commits](pivotal-cf/java-cfenv@v2.4.1...v2.4.2)

Updates `java-cfenv-test-support` from 2.4.1 to 2.4.2
- [Release notes](https://github.com/pivotal-cf/java-cfenv/releases)
- [Commits](pivotal-cf/java-cfenv@v2.4.1...v2.4.2)

---
updated-dependencies:
- dependency-name: io.pivotal.cfenv:java-cfenv
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.pivotal.cfenv:java-cfenv-test-support
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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