This PR is to add 4 new TLS root certificates from Digicert, Inc. This CA has gone through https://www.oracle.com/java/technologies/javase/carootcertsprogram.html process.
The release-note is at [JDK-8319243](https://bugs.openjdk.org/browse/JDK-8319243) ------------- Commit messages: - 8318759: Add four DigiCert root certificates Changes: https://git.openjdk.org/jdk/pull/16574/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16574&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8318759 Stats: 459 lines in 7 files changed: 456 ins; 0 del; 3 mod Patch: https://git.openjdk.org/jdk/pull/16574.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16574/head:pull/16574 PR: https://git.openjdk.org/jdk/pull/16574
