Remove support for Ubuntu 20.04 / Heroku-20 #358
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Since Heroku-20 is has reached end-of-life: https://devcenter.heroku.com/changelog-items/3230 (When this is released, I'll edit the cnb-builder-images PR by hand so it only updates the newer builders, until such time as more CNBs drop support, then we can adjust the builders list used by the release automation to no longer update the manifest for `heroku/builder:20`) GUS-W-14707057.
schneems
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## heroku/python ### Removed - Removed support for the deprecated `runtime.txt` file. Python versions must now be specified using a `.python-version` file instead. ([#352](#352)) - Removed support for Ubuntu 20.04 (and thus Heroku-20 / `heroku/builder:20`). ([#358](#358)) ### Changed - Improved the error messages shown when `.python-version` contains an invalid Python version or stray invisible characters (such as ASCII control codes). ([#353](#353) and [#354](#354)) - Improved the error messages shown if I/O errors occur. ([#355](#355) and [#356](#356))
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## heroku/python ### Removed - Removed support for the deprecated `runtime.txt` file. Python versions must now be specified using a `.python-version` file instead. ([#352](heroku/buildpacks-python#352)) - Removed support for Ubuntu 20.04 (and thus Heroku-20 / `heroku/builder:20`). ([#358](heroku/buildpacks-python#358)) ### Changed - Improved the error messages shown when `.python-version` contains an invalid Python version or stray invisible characters (such as ASCII control codes). ([#353](heroku/buildpacks-python#353) and [#354](heroku/buildpacks-python#354)) - Improved the error messages shown if I/O errors occur. ([#355](heroku/buildpacks-python#355) and [#356](heroku/buildpacks-python#356))
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Since our CNBs have started to drop support for Ubuntu 20.04 / Heroku-20 (since they have reached end-of-life), eg: - heroku/buildpacks-python#358 - heroku/buildpacks-ruby#422 ...and so we don't want the release automation to update to these new versions in `heroku/builder:20`. GUS-W-14706143. Signed-off-by: Ed Morley <[email protected]>
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Since our CNBs have started to drop support for Ubuntu 20.04 / Heroku-20 (since they have reached end-of-life), eg: - heroku/buildpacks-python#358 - heroku/buildpacks-ruby#422 ...and so we don't want the release automation to update to these new versions in `heroku/builder:20`. GUS-W-14706143. Signed-off-by: Ed Morley <[email protected]>
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Since Heroku-20 is has reached end-of-life:
https://devcenter.heroku.com/changelog-items/3230
(When this is released, I'll edit the cnb-builder-images PR by hand so it only updates the newer builders, until such time as more CNBs drop support, then we can adjust the builders list used by the release automation to no longer update the manifest for
heroku/builder:20)GUS-W-14707057.