Bump pin-project from 0.4.15 to 0.4.16

Bumps [pin-project](https://github.com/taiki-e/pin-project) from 0.4.15 to 0.4.16.
- [Release notes](https://github.com/taiki-e/pin-project/releases)
- [Changelog](https://github.com/taiki-e/pin-project/blob/master/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/pin-project/compare/v0.4.15...v0.4.16)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Cargo.lock

@@ -1037,18 +1037,18 @@ dependencies = [
 
 [[package]]
 name = "pin-project"
-version = "0.4.15"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c50dab4a05419117fe00216df4731e387ae616cd2a5f5dda1d8b02d863ac63d"
+checksum = "81d480cb4e89522ccda96d0eed9af94180b7a5f93fb28f66e1fd7d68431663d1"
 dependencies = [
  "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "0.4.15"
+version = "0.4.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c27e5ac1d4c76777afd4d47b8fe9c602b44bcf6f999d34e300bba5560c9837b"
+checksum = "a82996f11efccb19b685b14b5df818de31c1edcee3daa256ab5775dd98e72feb"
 dependencies = [
  "proc-macro2 1.0.9",
  "quote 1.0.3",