Drop Swift 5.7 support

Swift 5.7 doesn't support short-circuit evaluation in `#if` conditions

Author: kateinoigakukun

.github/workflows/test.yml

@@ -17,11 +17,11 @@ jobs:
           - { os: ubuntu-22.04, toolchain: wasm-5.10.0-RELEASE, wasi-backend: Node }
 
           # Ensure that test succeeds with all toolchains and wasi backend combinations
-          - { os: ubuntu-20.04, toolchain: wasm-5.7.3-RELEASE, wasi-backend: Node }
           - { os: ubuntu-20.04, toolchain: wasm-5.8.0-RELEASE, wasi-backend: Node }
-          - { os: ubuntu-20.04, toolchain: wasm-5.7.3-RELEASE, wasi-backend: MicroWASI }
+          - { os: ubuntu-20.04, toolchain: wasm-5.10.0-RELEASE, wasi-backend: Node }
           - { os: ubuntu-20.04, toolchain: wasm-5.8.0-RELEASE, wasi-backend: MicroWASI }
           - { os: ubuntu-20.04, toolchain: wasm-5.9.1-RELEASE, wasi-backend: MicroWASI }
+          - { os: ubuntu-20.04, toolchain: wasm-5.10.0-RELEASE, wasi-backend: MicroWASI }
           - os: ubuntu-22.04
             toolchain: DEVELOPMENT-SNAPSHOT-2024-05-01-a
             swift-sdk:
@@ -76,8 +76,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - os: macos-12
-            xcode: Xcode_14.0
           - os: macos-13
             xcode: Xcode_14.3
           - os: macos-14