Update actions/stale action to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/stale	action	major	v6.0.1 -> v7.0.0

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Release Notes

actions/stale

v7.0.0

Compare Source

⚠️ This version contains breaking changes ⚠️

What's Changed

• Allow daysBeforeStale options to be float by @​irega in https://github.com/actions/stale/pull/841
• Use cache in check-dist.yml by @​jongwooo in https://github.com/actions/stale/pull/876
• fix print outputs step in existing workflows by @​irega in https://github.com/actions/stale/pull/859
• Update issue and PR templates, add/delete workflow files by @​IvanZosimov in https://github.com/actions/stale/pull/880
• Update how stale handles exempt items by @​johnsudol in https://github.com/actions/stale/pull/874

Breaking Changes

• In this release we prevent this action from managing the stale label on items included in exempt-issue-labels and exempt-pr-labels
• We decided that this is outside of the scope of this action, and to be left up to the maintainer

New Contributors

• @​irega made their first contribution in https://github.com/actions/stale/pull/841
• @​jongwooo made their first contribution in https://github.com/actions/stale/pull/876
• @​IvanZosimov made their first contribution in https://github.com/actions/stale/pull/880
• @​johnsudol made their first contribution in https://github.com/actions/stale/pull/874

Full Changelog: actions/stale@v6...v7.0.0

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