ci: upgrade rb-sys and decouple rb-sys-dock image tag

Author: kateinoigakukun

.github/workflows/build-gems.yml

@@ -56,8 +56,7 @@ jobs:
           fi
 
           # Ruby 4.0 cross-compilation support requires newer rb-sys/rake-compiler-dock.
-          # 0.9.124 has published docker images across all target platforms.
-          min_version="0.9.124"
+          min_version="0.9.126"
           if [ "$(printf '%s\n' "$version" "$min_version" | sort -V | tail -n1)" != "$version" ]; then
             version="$min_version"
           fi
@@ -72,7 +71,7 @@ jobs:
           RB_SYS_VERSION: ${{ steps.rb-sys.outputs.version }}
         run: |
           gem install rb_sys -v "$RB_SYS_VERSION"
-          rb-sys-dock --platform "$PLATFORM" --directory . --ruby-versions "$RUBY_VERSIONS" --tag "$RB_SYS_VERSION" --build
+          rb-sys-dock --platform "$PLATFORM" --directory . --ruby-versions "$RUBY_VERSIONS" --build
 
           gem_path="$(find ./pkg -name "*-${PLATFORM}.gem" | head -n1)"
           if [ -z "$gem_path" ]; then

Cargo.lock

@@ -7,7 +7,7 @@ gemspec
 group :development do
   gem "rake"
   gem "rake-compiler"
-  gem "rb_sys", "0.9.124"
+  gem "rb_sys", "0.9.126"
   gem "rdoc", "~> 7.0"
 end