openjdk-11(security release): update problemlists, fix reproducible-properties-timestamp.patch

Changes:

  * OpenJDK 11.0.21 release, build 9.
    - CVE-2023-22081.
    - Release notes:
      https://www.oracle.com/java/technologies/javase/11-0-21-relnotes.html#R11_0_21
  * d/test: update problemlist.
  * d/p: drop exclude-broken-tests.patch.
  * d/p/reproducible-properties-timestamp.diff: use the privileged action
    to read the system property (JDK-8272157, 914278). 

Testing:

• build in sid chroot
• ppa build: https://launchpad.net/~vpa1977/+archive/ubuntu/october-21/+sourcepub/15217457/+listing-archive-extra