Update dependency earthly/earthly to v0.8.7

[renovate]

This PR contains the following updates:

Package	Update	Change
earthly/earthly	patch	v0.8.6 -> v0.8.7

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Release Notes

earthly/earthly (earthly/earthly)

v0.8.7

Compare Source

Added

• Warning log when resolving remote references using a git image that doesn't match Buildkit's architecture.
• New experimental --exec-stats-summary=<path> cli flag, which will display a summary of memory and cpu stats when earthly exits.
• A notice is now displayed when unnecessary feature flags are set (but already enabled by default by the VERSION number). Thanks to @​danqixu for the contribution! #​3641
• A warning is displayed if the local buildkit image architecture does not match the host architecture. #​3937

Fixed

• Warning logs during HTTP retries are only displayed in --debug mode.
• The HOST command will now expand variables. Thanks to @​pbecotte for the contribution! #​1743
• runc has been updated to 1.1.12 in the buildkit fork

Additional Info

• This release includes changes to buildkit

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