[rubygems/rubygems] Bump rb-sys

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.30 to 0.9.31.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](https://github.com/oxidize-rb/rb-sys/compare/v0.9.30...v0.9.31)

---
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/4ad57bacea

test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/Cargo.lock

@@ -153,9 +153,9 @@ dependencies = [
 
 [[package]]
 name = "rb-sys"
-version = "0.9.30"
+version = "0.9.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24b22a374fc2e92eb6f49d7efe4eb7663655c6e9455d9259ed3342cc1599da85"
+checksum = "bfc41b26ea88da6100f538d31467941e41ab0c002999d687315e67d3b371b796"
 dependencies = [
  "bindgen",
  "linkify",
@@ -164,9 +164,9 @@ dependencies = [
 
 [[package]]
 name = "rb-sys-build"
-version = "0.9.30"
+version = "0.9.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cd23b6dd929b7d50ccb35a6d3aa77dec364328ab9cb304dd32c629332491671"
+checksum = "79be4233eabd2bf9e19eb8116391aeaf4b89b87a7ab38e0ded44de9158006e46"
 dependencies = [
  "regex",
  "shell-words",

test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/Cargo.toml

@@ -7,4 +7,4 @@ edition = "2021"
 crate-type = ["cdylib"]
 
 [dependencies]
-rb-sys = { version = "0.9.30", features = ["gem"] }
+rb-sys = { version = "0.9.31", features = ["gem"] }