Merge pull request #1317 from pulp/patchback/backports/3.13/2f9f764c3a95be4dcdd42941d25ff8b50ba1635c/pr-1314

[PR #1314/2f9f764c backport][3.13] [3.19] Pin twine<7 to fix tests

Author: jobselko

functest_requirements.txt

@@ -1,6 +1,7 @@
 pytest<8
 lxml
-twine
+# test_attestation_twine_upload and test_twine_upload use shelf-reader 0.1 with Metadata-Version 2.0, rejected by twine>=7
+twine<7
 pypi-simple
 pytest-custom_exit_code
 pytest-xdist