snapcraft 8.2.12

[BrewTestBot]

Created by brew bump

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Created with brew bump-formula-pr.

• resource blocks have been checked for updates.

release notes

## Core
Fixes an issue where core24 snaps would stage python packages already included in the core24 base snap (#4865)
Store
Fixes an issue where store-related error messages would be presented as an internal Snapcraft error.
Additionally, keyring errors now suggest a resolution and link to documentation
Documentation
Fixes Snapcraft's version in the readthedocs documentation.
What's Changed

build(docs): fix version in rtd builds by @tigarmo in build(docs): fix version in rtd builds canonical/snapcraft#4864
fix(cli): properly capture store errors by @sergiusens in fix(cli): properly capture store errors canonical/snapcraft#4863
tests: add a test for package filtering in core24 by @tigarmo in tests: add a test for package filtering in core24 canonical/snapcraft#4862

Full Changelog: canonical/snapcraft@8.2.11...8.2.12

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