[jdk21u-dev] RFR: Merge jdk21u:master

[Goetz Lindenmaier]

Merge build tag 21.0.8+7 from jdk21u to jdk21u-dev

-------------

Commit messages:
 - Merge
 - 8359170: Add 2 TLS and 2 CS Sectigo roots

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/jdk21u-dev/pull/1898/files
  Stats: 479 lines in 7 files changed: 475 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1898.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1898/head:pull/1898

PR: https://git.openjdk.org/jdk21u-dev/pull/1898