Note: this PR depends on #2304

## Update to Go v1.25.5
As part of this upgrade several changes were needed to resolve go vet
failures around non-constant format strings:

- Updating all apierrors constructors to use const fmt strings with args
- Removing fmt.Sprintf usages that violate go vet fmt checks
- Refactoring internal error/message helpers to accept fmt + params

In addition stricter checks in the standard library for x509 certificate
creation required a change to a SAML test in internal/conf. Now I start
with a valid certificate and then set the serial number to an invalid
value. To do this I opted for a small refactor to PopulateFields to
return the cert object instead of copying the code within the test.

## Why update?
Aside from security related reasons and general best practices here are
some highlights im looking forward to!

* The [flight recorder](https://go.dev/blog/flight-recorder) could be
great for debugging performance bottlenecks. I personally am super
excited for this feature, I hope the new streamable tracing API will
enable a new class of interesting visual tools in the future.
* The [synctest](https://pkg.go.dev/testing/synctest) package means no
more DI for `now func() time.Time` :D
* Addition of [t.Context()](https://pkg.go.dev/testing#T.Context) and
[t.Cleanup(func())](https://pkg.go.dev/testing#T.Cleanup) will make
lower friction as we sever ties with our testing framework. There are
other neat API's like `T.Attr` and `T.Output`.
* The new [json/v2](https://pkg.go.dev/encoding/json/[email protected])
package offers more efficient memory usage and faster API's. When I've
ran profiling in the past JSON is a significant portion of our CPU time
so we should see some nice gains for this.
* The new
[jsontext](https://pkg.go.dev/encoding/json/[email protected]#example-package-StringReplace)
may come in handy for implementing JWT templates depending on how we
want to design it.
* And much more!

---------

Co-authored-by: Chris Stockton <[email protected]>

This reverts commit 33bb372.

Resets the main branch (`master`) to have the same changeset as 2.184.0
but under 2.185.0.

Original release please notes:


### Features

* Add Sb-Forwarded-For header and IP-based rate limiting
([#2295](#2295))
([e8f679b](e8f679b))
* allow amr claim to be array of strings or objects
([#2274](#2274))
([607da43](607da43))
* Treat rate limit header value as comma-separated list
([#2282](#2282))
([5f2e279](5f2e279))


### Bug Fixes

* check each type independently
([#2290](#2290))
([d9de0af](d9de0af))
* fix the wrong error return value
([#1950](#1950))
([e2dfb5d](e2dfb5d))
* **indexworker:** remove pg_trgm extension
([#2301](#2301))
([c553b10](c553b10))
* **oauth-server:** allow custom URI schemes in client redirect URIs
([#2298](#2298))
([ea72f57](ea72f57))
* tighten email validation rules
([#2304](#2304))
([33bb372](33bb372))

---------

Co-authored-by: depthfirst-app[bot] <184448029+depthfirst-app[bot]@users.noreply.github.com>

🤖 I have created a release *beep* *boop*
---


##
[2.185.0](v2.184.0...v2.185.0)
(2026-01-12)


### Features

* Add Sb-Forwarded-For header and IP-based rate limiting
([#2295](#2295))
([e8f679b](e8f679b))
* allow amr claim to be array of strings or objects
([#2274](#2274))
([607da43](607da43))
* reset main branch to 2.185.0
([#2325](#2325))
([b9d0500](b9d0500))
* Treat rate limit header value as comma-separated list
([#2282](#2282))
([5f2e279](5f2e279))


### Bug Fixes

* additional provider and issuer checks
([#2326](#2326))
([cb79a74](cb79a74))
* check each type independently
([#2290](#2290))
([d9de0af](d9de0af))
* fix the wrong error return value
([#1950](#1950))
([e2dfb5d](e2dfb5d))
* **indexworker:** remove pg_trgm extension
([#2301](#2301))
([c553b10](c553b10))
* **oauth-server:** allow custom URI schemes in client redirect URIs
([#2298](#2298))
([ea72f57](ea72f57))
* tighten email validation rules
([#2304](#2304))
([33bb372](33bb372))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>