MNT: (deps): 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/code-analysis.yml

@@ -28,7 +28,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Initialize CodeQL
       uses: github/codeql-action/init@v1

.github/workflows/docs-conda.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100
 

.github/workflows/docs.yml

@@ -40,7 +40,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100
 

.github/workflows/linting.yml

@@ -13,7 +13,7 @@ jobs:
     name: Flake8
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Python 3
         uses: actions/setup-python@v3

.github/workflows/nightly-builds.yml

@@ -25,7 +25,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100
 
@@ -68,7 +68,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100
 

.github/workflows/release.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build Release Packages
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         fetch-depth: 10
 

.github/workflows/tests-conda.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100
 

.github/workflows/tests-pypi.yml

@@ -35,7 +35,7 @@ jobs:
     steps:
     # We check out only a limited depth and then pull tags to save time
     - name: Checkout source
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         fetch-depth: 100