Bump actions/checkout from 2 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/codeql-analysis.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/release.yml

@@ -6,7 +6,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/[email protected]
         with:
           python-version: "3.8"

.github/workflows/test-pypi.yml

@@ -8,7 +8,7 @@ jobs:
   test_pypi:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/[email protected]
         with:
           python-version: "3.8"

.github/workflows/tests-release.yml

@@ -14,7 +14,7 @@ jobs:
         python-version: [2.7, 3.6, 3.7]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/[email protected]
         with:

.github/workflows/tests.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/[email protected]
@@ -81,14 +81,14 @@ jobs:
 
       - name: Upload coverage data
         if: always() && matrix.session == 'tests'
-        uses: "actions/upload-artifact@v2.2.4"
+        uses: "actions/upload-artifact@v3.1.0"
         with:
           name: coverage-data
           path: ".coverage.*"
 
       - name: Upload documentation
         if: matrix.session == 'docs-build'
-        uses: actions/upload-artifact@v2.2.4
+        uses: actions/upload-artifact@v3.1.0
         with:
           name: docs
           path: docs/_build
@@ -98,7 +98,7 @@ jobs:
     needs: tests
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v2.3.4
+        uses: actions/checkout@v3
 
       - name: Set up Python 3.9
         uses: actions/[email protected]