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](https://github.com/mozilla/cbindgen/compare/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>

Cargo.lock

@@ -689,9 +689,9 @@ dependencies = [
 
 [[package]]
 name = "cbindgen"
-version = "0.25.0"
+version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "faeaa693e5a727975a79211b8f35c0cb09b031fdb6eaa4a788bc6713d01488ca"
+checksum = "da6bc11b07529f16944307272d5bd9b22530bc7d05751717c9d416586cedab49"
 dependencies = [
  "clap",
  "heck",

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"]