[jdk11u-dev] RFR: Merge jdk11u:jdk11.0.20.1

[Christoph Langer]

We should merge the jdk11.0.20.1 release into the tree of jdk11u/jdk11u-dev.

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Commit messages:
 - Merge 'jdk11.0.20.1' into jdk11u-dev
 - 8313765: Invalid CEN header (invalid zip64 extra data field size)
 - 8314678: Bump update version for OpenJDK: jdk-11.0.20.1

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

Changes: https://git.openjdk.org/jdk11u-dev/pull/2101/files
  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2101.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2101/head:pull/2101

PR: https://git.openjdk.org/jdk11u-dev/pull/2101