[ci/release] Use macos-13 runner when compiling for macOS (Intel)

Author: auguwu

.github/workflows/Release.yaml

@@ -46,7 +46,7 @@ jobs:
                       ext: ''
 
                     # ume (macOS x86_64 ~ Intel)
-                    - runner: macos-latest
+                    - runner: macos-13
                       target: x86_64-apple-darwin
                       rustflags: "-Ctarget-cpu=native"
                       cross: false
@@ -56,7 +56,7 @@ jobs:
                     # ume (macOS ARM64 ~ Apple Silicon)
                     - runner: macos-latest
                       target: aarch64-apple-darwin
-                      rustflags: ''
+                      rustflags: '-Ctarget-cpu=native'
                       cross: false
                       flags: ""
                       ext: ''