RFR: JDK-8265371: Change to Visual Studio 2019 16.9.3 for building on Windows at Oracle

[Erik Joelsson]

Oracle is updating the minor version of Visual Studio for building the JDK to 16.9.3.

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Commit messages:
 - JDK-8265371: Change to Visual Studio 2019 16.9.3 for building on Windows at Oracle

Changes: https://git.openjdk.java.net/jdk/pull/3550/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3550&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8265371
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3550.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3550/head:pull/3550

PR: https://git.openjdk.java.net/jdk/pull/3550