use v3 of checkout action

Author: lukepistrol

.github/workflows/build-documentation.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: [self-hosted, macOS]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v1
+        uses: actions/checkout@v3
       - name: Build Documentation
         run: exec ./.github/scripts/build-docc.sh
       - name: Init new repo in dist folder and commit generated files

.github/workflows/swiftlint.yml

@@ -6,6 +6,6 @@ jobs:
   SwiftLint:
     runs-on: [self-hosted, macOS]
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
       - name: GitHub Action for SwiftLint with --strict
         run: swiftlint --strict

.github/workflows/tests.yml

@@ -8,6 +8,6 @@ jobs:
     runs-on: [self-hosted, macOS]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v1
+        uses: actions/checkout@v3
       - name: Testing Package
         run: exec ./.github/scripts/tests.sh arm