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](https://github.com/actions/checkout/compare/v2...v3)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/dependency-updates.yml

@@ -9,7 +9,7 @@ jobs:
     name: Run dependency update script
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: nanasess/setup-php@master
       with:
         php-version: '8.0'

.github/workflows/nextcloud-update.yml

@@ -10,7 +10,7 @@ jobs:
     name: Run nextcloud-update script
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run nextcloud-update script
       run: |
         # Inspired by https://github.com/nextcloud/docker/blob/master/update.sh

.github/workflows/psalm-analysis.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Psalm
         uses: docker://ghcr.io/nextcloud/all-in-one-psalm
         with:

.github/workflows/psalm-security.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Psalm
         uses: docker://ghcr.io/nextcloud/all-in-one-psalm
         with:

.github/workflows/psalm-update-baseline.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up php8.0
         uses: shivammathur/setup-php@v2

.github/workflows/shellcheck.yml

@@ -9,7 +9,7 @@ jobs:
     name: Github Actions
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Run Shellcheck
       uses: ludeeus/action-shellcheck@master
       with:

.github/workflows/spellcheck.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: spelling or typos
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: misspell
         uses: reviewdog/action-misspell@v1
         with: