RFR: JDK-8310173: Update --release 21 symbol information for JDK 21 build 29

[Joe Darcy]

Looks like JDK-8310459 involved some updates to the vector API.

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

Commit messages:
 - JDK-8310173: Update --release 21 symbol information for JDK 21 build 29

Changes: https://git.openjdk.org/jdk/pull/14740/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14740&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310173
  Stats: 32 lines in 2 files changed: 0 ins; 31 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/14740.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14740/head:pull/14740

PR: https://git.openjdk.org/jdk/pull/14740