fix: [release-0.15] os to runner_os (#905)

Author: Hiroshiba

.github/actions/cargo-binstall-cbindgen/action.yml

@@ -9,7 +9,7 @@ runs:
     - name: Install cbindgen
       shell: bash
       run: |
-        case "$OS" in
+        case "$RUNNER_OS" in
           Windows)
             cargo install cbindgen --version ${{ inputs.version }};;
           macOS | Linux )

.github/workflows/build_and_deploy.yml

@@ -231,7 +231,7 @@ jobs:
       - name: Rename the binary
         shell: bash
         run: |
-          case "$OS" in
+          case "$RUNNER_OS" in
             Windows) exe_suffix=.exe;;
             Linux | macOS) exe_suffix=;;
           esac