[jdk11u-dev] RFR: 8294956: GHA: qemu-debootstrap is deprecated, use the regular one

[Aleksey Shipilev]

Clean backport to further improve 11u GHA reliability.

Additional testing:
 - [ ] GHA

-------------

Commit messages:
 - Backport c5f462e83b85ec53ec395622063a5b131aaf0827

Changes: https://git.openjdk.org/jdk11u-dev/pull/2106/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2106&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294956
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2106.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2106/head:pull/2106

PR: https://git.openjdk.org/jdk11u-dev/pull/2106