[rubygems/rubygems] Bump rb-sys

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.84 to 0.9.85.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](https://github.com/oxidize-rb/rb-sys/compare/v0.9.84...v0.9.85)

---
updated-dependencies:
- dependency-name: rb-sys
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

https://github.com/rubygems/rubygems/commit/8a3a85404a

test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/Cargo.lock

@@ -145,18 +145,18 @@ dependencies = [
 
 [[package]]
 name = "rb-sys"
-version = "0.9.84"
+version = "0.9.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3def04a96a36ef8681a2b2e26c01683b93a8630175c845fa06cab76c5a8c7ce0"
+checksum = "05b780e6858b0b0eced1d55d0f097c024b77a37b41f83bd35341130f78e37c51"
 dependencies = [
  "rb-sys-build",
 ]
 
 [[package]]
 name = "rb-sys-build"
-version = "0.9.84"
+version = "0.9.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c017d134afd764dd43c2faa91aa50b698a3bb4ff30e83113da483c789e74be8c"
+checksum = "44957a3bc513dad1b0f20bdd0ee3b82e729a59da44086a6b40d8bc71958a6db8"
 dependencies = [
  "bindgen",
  "lazy_static",

test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/Cargo.toml

@@ -7,4 +7,4 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-rb-sys = "0.9.84"
+rb-sys = "0.9.85"