build: bump version to v0.6 rc1

[Roasbeef]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 14878820044

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall first build on v-06-rc1 at 36.941%

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Totals
Change from base Build 14866822237:	36.9%
Covered Lines:	26459
Relevant Lines:	71625

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💛 - Coveralls

[guggero]

Just a heads up that we have a slightly different tag naming scheme in the tapd repo than everywhere else. The tag name is also validated by the CI release process, so the release binaries won't be created if the tag name is incorrect. So best to use the make release-tag command to create the tag (which also verifies it is made on the correct commit).