build(deps): bump cbindgen from 0.25.0 to 0.26.0 (#30352)

Bumps [cbindgen](https://github.com/mozilla/cbindgen) from 0.25.0 to 0.26.0.
- [Release notes](https://github.com/mozilla/cbindgen/releases)
- [Changelog](https://github.com/mozilla/cbindgen/blob/master/CHANGES)
- [Commits](mozilla/cbindgen@v0.25.0...v0.26.0)

---
updated-dependencies:
- dependency-name: cbindgen
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

ports/libsimpleservo/capi/Cargo.toml

@@ -26,7 +26,7 @@ libc = { workspace = true }
 winapi = { workspace = true, features = ["wingdi", "winuser", "winnt", "winbase", "processenv", "namedpipeapi", "ntdef", "minwindef", "handleapi", "debugapi"] }
 
 [build-dependencies]
-cbindgen = "0.25"
+cbindgen = "0.26"
 
 [features]
 debugmozjs = ["simpleservo/debugmozjs"]