core: bump which from 8.0.3 to 8.0.4 (#23254)

Bumps [which](https://github.com/harryfei/which-rs) from 8.0.3 to 8.0.4.
- [Release notes](https://github.com/harryfei/which-rs/releases)
- [Changelog](https://github.com/harryfei/which-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/harryfei/which-rs/compare/8.0.3...8.0.4)

---
updated-dependencies:
- dependency-name: which
  dependency-version: 8.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -4458,9 +4458,9 @@ dependencies = [
 
 [[package]]
 name = "which"
-version = "8.0.3"
+version = "8.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c789537cf2f7f55be8e6192f92e464174ee55f91af622777f7f1ceb0dbccd03e"
+checksum = "48d7cd18d4acb58fb3cdfe9ea54e6cd96a4e7d4cc45c56338b236e82dad47248"
 dependencies = [
  "libc",
 ]

Cargo.toml

@@ -114,7 +114,7 @@ tracing-subscriber = { version = "= 0.3.23", features = [
 ] }
 url = "= 2.5.8"
 uuid = { version = "= 1.23.3", features = ["serde", "v4"] }
-which = "= 8.0.3"
+which = "= 8.0.4"
 
 ak-axum = { package = "authentik-axum", version = "2026.8.0-rc1", path = "./packages/ak-axum" }
 ak-client = { package = "authentik-client", version = "2026.8.0-rc1", path = "./packages/client-rust" }