[rubygems/rubygems] Bump rb-sys in /test/rubygems/test_gem_ext_cargo_builder/custom_name

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.29 to 0.9.30.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](https://github.com/oxidize-rb/rb-sys/compare/v0.9.29...v0.9.30)

---
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/d54c936c4c

test/rubygems/test_gem_ext_cargo_builder/custom_name/Cargo.lock

@@ -160,9 +160,9 @@ dependencies = [
 
 [[package]]
 name = "rb-sys"
-version = "0.9.29"
+version = "0.9.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0317cb843cdeef14c5622917c55c0a170cee31348eb600c4a1683fb8c9e87e7a"
+checksum = "24b22a374fc2e92eb6f49d7efe4eb7663655c6e9455d9259ed3342cc1599da85"
 dependencies = [
  "bindgen",
  "linkify",
@@ -171,9 +171,9 @@ dependencies = [
 
 [[package]]
 name = "rb-sys-build"
-version = "0.9.29"
+version = "0.9.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4b8274327aecb7edcff86e290d9cbe7b572b7889c1cfc7476358f4831f78ce5"
+checksum = "3cd23b6dd929b7d50ccb35a6d3aa77dec364328ab9cb304dd32c629332491671"
 dependencies = [
  "regex",
  "shell-words",

test/rubygems/test_gem_ext_cargo_builder/custom_name/Cargo.toml

@@ -7,4 +7,4 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-rb-sys = { version = "0.9.29", features = ["gem"] }
+rb-sys = { version = "0.9.30", features = ["gem"] }