RFR: 8268860: Windows-Aarch64 build is failing in GitHub actions

[Magnus Ihse Bursie]

GHA for Windows/aarch64 was disabled in [JDK-8268861](https://bugs.openjdk.java.net/browse/JDK-8268861). The problem with GHA for windows/aarch64 was due to using Visual Studio 14.28. (Why this suddenly *started* failing is a mystery for another time. Perhaps GitHub, or Microsoft, changed something...)

Upgrading to 14.29 (which is the default on the GitHub actions machines) solves the problem.

This patch contains a revert of JDK-8268861, followed by an upgrade to 14.29.

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Commit messages:
 - Update to msdev 14.29 for Windows/aarch64.
 - Revert "8268861: Disable Windows-Aarch64 build in GitHub Actions"

Changes: https://git.openjdk.java.net/jdk/pull/4681/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4681&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268860
  Stats: 92 lines in 1 file changed: 91 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4681.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4681/head:pull/4681

PR: https://git.openjdk.java.net/jdk/pull/4681