[jdk17u-dev] RFR: 8306664: GHA: Update MSVC version to latest stepping

[Christoph Langer]

This PR bumps the MSVC version for Windows x64 used in GHA to 14.29, just as in head and also for Windows/arm64.

The GHA tests probably won't be green until [JDK-8306543](https://bugs.openjdk.org/browse/JDK-8306543) gets backported, I'll refresh this PR after it has landed.
Together with a backport of [JDK-8306658](https://bugs.openjdk.org/browse/JDK-8306658) we'll be able to reduce GHA runtimes on Windows significantly.

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Commit messages:
 - JDK-8306664

Changes: https://git.openjdk.org/jdk17u-dev/pull/1291/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1291&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306664
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1291.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1291/head:pull/1291

PR: https://git.openjdk.org/jdk17u-dev/pull/1291