chore: move the tests to the v1 apis

[rustatian]

Moves the tests module to the v1-only api-go beta.14 with resetter beta.5, metrics beta.6 and status beta.7. The resetter proto is gone in beta.14, so resetAll in tls_test.go now uses the plain struct RPC surface (resetter.List, resetter.Reset). The new betas require go 1.27, which bumps the tests module and the workspace.

Two side fixes in the same area:

• the grpc php workers now route display_errors to stderr before autoload, like the bench worker already did, so deprecation notices cannot corrupt the goridge handshake on stdout
• the CodeQL workflow installs go from go.work: autobuild runs with GOTOOLCHAIN=local and fails once go.work requires a newer toolchain than go.mod resolves to (this is what broke the CodeQL job on the last centrifuge dependabot PR, and grpc has the same layout)

The full test suite passes locally against the bumped stack.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.81%. Comparing base (a3a8f79) to head (ca7a495).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #153      +/-   ##
==========================================
+ Coverage   78.41%   84.81%   +6.39%     
==========================================
  Files          10       10              
  Lines         746      652      -94     
==========================================
- Hits          585      553      -32     
+ Misses        117       99      -18     
+ Partials       44        0      -44     

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