[rubygems/rubygems] Bump rb-sys

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.91 to 0.9.94.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](https://github.com/oxidize-rb/rb-sys/compare/v0.9.91...v0.9.94)

---
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/04cf565ebe

test/rubygems/test_gem_ext_cargo_builder/custom_name/ext/custom_name_lib/Cargo.lock

@@ -152,18 +152,18 @@ dependencies = [
 
 [[package]]
 name = "rb-sys"
-version = "0.9.91"
+version = "0.9.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb81203e271055178603e243fee397f5f4aac125bcd20036279683fb1445a899"
+checksum = "06dab8dbb0beb0a575a80c4b46355c8ace1f3dc5df60a3109758f205f1061366"
 dependencies = [
  "rb-sys-build",
 ]
 
 [[package]]
 name = "rb-sys-build"
-version = "0.9.91"
+version = "0.9.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9de9403a6aac834e7c9534575cb14188b6b5b99bafe475d18d838d44fbc27d31"
+checksum = "164d44950a42f2ba2f94efdcb650e14764270f84d281352aebb261806da0b2ce"
 dependencies = [
  "bindgen",
  "lazy_static",

test/rubygems/test_gem_ext_cargo_builder/custom_name/ext/custom_name_lib/Cargo.toml

@@ -7,4 +7,4 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-rb-sys = "0.9.91"
+rb-sys = "0.9.94"