[PR #10057/a720e994 backport][stable-10] Mark supervisorctl tests as unstable (#10060)

Mark supervisorctl tests as unstable (#10057)

Mark supervisorctl tests as unstable.

(cherry picked from commit a720e99)

Co-authored-by: Felix Fontein <[email protected]>

Author: patchback[bot]

tests/integration/targets/supervisorctl/aliases

@@ -7,3 +7,4 @@ destructive
 skip/aix
 skip/rhel  # TODO executables are installed in /usr/local/bin, which isn't part of $PATH
 skip/macos  # TODO executables are installed in /Library/Frameworks/Python.framework/Versions/3.11/bin, which isn't part of $PATH
+unstable # TODO fix!