RFR: 8320681: [macos] Test tools/jpackage/macosx/MacAppStoreJlinkOptionsTest.java timed out on macOS

[Alexander Matveev]

Looks like the test timed out due to slow/loaded host. Failure log similar to [JDK-8296489](https://bugs.openjdk.org/browse/JDK-8296489) and [JDK-8298735](https://bugs.openjdk.org/browse/JDK-8298735). Fixed by increasing test timeout.

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Commit messages:
 - 8320681: [macos] Test tools/jpackage/macosx/MacAppStoreJlinkOptionsTest.java timed out on macOS

Changes: https://git.openjdk.org/jdk/pull/16838/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16838&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320681
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/16838.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16838/head:pull/16838

PR: https://git.openjdk.org/jdk/pull/16838