RFR: 8258054: runtime/sealedClasses/GetPermittedSubclassesTest.java fails w/ jdk17

[Igor Ignatyev]

Hi all,

could you please review this small and trivial patch which updates class file version in `test/hotspot/jtreg/runtime/sealedClasses/GetPermittedSubclasses.jcod`? [8257450](https://bugs.openjdk.java.net/browse/JDK-8257450] has updated only one class defined by `GetPermittedSubclasses.jcod`, this patch updates the 2nd (out of 2).

testing: `runtime/sealedClasses/GetPermittedSubclassesTest.java`

-- Igor

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Commit messages:
 - 8258054: runtime/sealedClasses/GetPermittedSubclasses.jcod must use 61 class file version

Changes: https://git.openjdk.java.net/jdk/pull/1738/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1738&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258054
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1738.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1738/head:pull/1738

PR: https://git.openjdk.java.net/jdk/pull/1738