[jdk21u-dev] RFR: 8328957: Update PKCS11Test.java to not use hardcoded path

[Goetz Lindenmaier]

I backport this for parity with 21.0.4-oracle

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Commit messages:
 - Backport 16576b87b7267aaa99c41f77993287e3479577aa

Changes: https://git.openjdk.org/jdk21u-dev/pull/521/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=521&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328957
  Stats: 37 lines in 1 file changed: 11 ins; 9 del; 17 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/521.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/521/head:pull/521

PR: https://git.openjdk.org/jdk21u-dev/pull/521