[Bug 1918907] Update Released

[Chris Halse Rogers]

The verification of the Stable Release Update for apt has completed
successfully and the package is now being released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1918907

Title:
  Default Acquire::AllowReleaseInfoChange::Suite to "true"

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Bionic:
  Fix Released
Status in apt source package in Focal:
  Fix Released

Bug description:
  [Impact]
  APT 1.6-2.0 deny third-party repositories from changing their Suite value. This change was reverted in later apt releases, and will be reverted in 1.8 in Debian as well, so for consistency, we want to push that change to stable

  [Test plan]
  We added test cases to our extensive integration test suite run by autopkgtest.

  [Where problems could occur]
  It's hard to imagine anything here, we simply turn the flag for allowed from false to true. We even add tests for Suite changes :)

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