Release v0.26.0

What's Changed

• Use pubtools namespace to resolve init file conflict [RHELDST-17607] by @amcmahon-rh in #49
• Create add-deprecations entrypoint [CLOUDDST-23912] by @emilyzheng in #52

New Contributors

• @amcmahon-rh made their first contribution in #51

Full Changelog: v0.25.0...v0.26.0