bump swift to 5.9

.github/workflows/ci.yaml

@@ -6,34 +6,34 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: norio-nomura/[email protected]
         with:
           args: --strict
   macOS-test:
     strategy:
       matrix:
         swift-version:
-          - "5.7"
+          - "5.9"
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: swift-actions/setup-swift@v1
         with:
           swift-version: ${{ matrix.swift-version }}
       - run: swift test
   iOS-build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: xcodebuild -scheme NdArray -destination 'platform=iOS Simulator,name=iPhone 13'
   tvOS-build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: xcodebuild -scheme NdArray -destination 'platform=tvOS Simulator,name=Apple TV'
   whatchOS-build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: xcodebuild -scheme NdArray -destination 'platform=watchOS Simulator,name=Apple Watch Series 8 (45mm)'

README.md

@@ -1,6 +1,6 @@
 # NdArray
 
-[![Swift Version](https://img.shields.io/badge/swift-5.7-blue.svg)](https://swift.org)
+[![Swift Version](https://img.shields.io/badge/swift-5.9-blue.svg)](https://swift.org)
 ![Platform](https://img.shields.io/badge/platform-macOS|iOS|tvOS|whatchOS-lightgray.svg)
 ![Build](https://github.com/dastrobu/NdArray/actions/workflows/ci.yaml/badge.svg)