[rubygems/rubygems] Bump rb-sys

Bumps [rb-sys](https://github.com/oxidize-rb/rb-sys) from 0.9.77 to 0.9.78.
- [Release notes](https://github.com/oxidize-rb/rb-sys/releases)
- [Commits](https://github.com/oxidize-rb/rb-sys/compare/v0.9.77...v0.9.78)

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

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

test/rubygems/test_gem_ext_cargo_builder/rust_ruby_example/Cargo.lock

@@ -145,18 +145,18 @@ dependencies = [
 
 [[package]]
 name = "rb-sys"
-version = "0.9.77"
+version = "0.9.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d2eb4e2afad796b886b0146e82343f5cf06c5f8abc26648cb7a0c4aff1e5e87"
+checksum = "91447d8cbb45afb5c915bad4dd44bd4b4e9be37648122409ceca75302cb81683"
 dependencies = [
  "rb-sys-build",
 ]
 
 [[package]]
 name = "rb-sys-build"
-version = "0.9.77"
+version = "0.9.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b489abaa43843504e3aab8c7f86aa964b3041452d031281969a5fc70b0bd67c3"
+checksum = "20673c1cfbd57b2db6c066b796352f07d241c45b210fd15b269dec54fa240380"
 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 = "0.9.77"
+rb-sys = "0.9.78"