Preparing release v1.70.2

[AllenLuUber]

• [ ] Description and context for reviewers: one partner, one stranger
• [ ] Docs (package doc)
• [ ] Entry in CHANGELOG.md

[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: -0.01 :warning:

Comparison is base (9cdc0db) 85.36% compared to head (d86c0ec) 85.36%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2215 +/- ## ========================================== - Coverage 85.36% 85.36% -0.01% ========================================== Files 270 270 Lines 15479 15479 ========================================== - Hits 13214 13213 -1 Misses 1844 1844 - Partials 421 422 +1 ``` | [Impacted Files](https://codecov.io/gh/yarpc/yarpc-go/pull/2215?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yarpc) | Coverage Δ | | |---|---|---| | [transport/http/codes.go](https://codecov.io/gh/yarpc/yarpc-go/pull/2215?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yarpc#diff-dHJhbnNwb3J0L2h0dHAvY29kZXMuZ28=) | `100.00% <ø> (ø)` | | ... and [2 files with indirect coverage changes](https://codecov.io/gh/yarpc/yarpc-go/pull/2215/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yarpc) Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yarpc). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=yarpc)

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