RFR: 8322920: Some executeProcess overloads are declared to throw Throwable

[Stefan Karlsson]

Most functions in ProcessTools are declared to throw Exceptions, or one of its subclasses. However, there are a small number of functions that are unnecessarily declared to throw Throwable instead of Exception. I propose that we change them to also be declared to throw Exception.

This is a trivial patch to make it easier to refactor tests to use the updated functions.

Tested manually, but will wait for GHA to verify that the change is OK.

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Commit messages:
 - 8322920: Some executeProcess overloads are declared to throw Throwable

Changes: https://git.openjdk.org/jdk/pull/17240/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17240&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322920
  Stats: 5 lines in 1 file changed: 0 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/17240.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17240/head:pull/17240

PR: https://git.openjdk.org/jdk/pull/17240