Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [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/v3...v4)

---
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/main.yml

@@ -39,7 +39,7 @@ jobs:
     runs-on: macos-11
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -73,7 +73,7 @@ jobs:
     runs-on: windows-2019
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -104,7 +104,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -140,7 +140,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -171,7 +171,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -294,7 +294,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -409,7 +409,7 @@ jobs:
       ZITI_VERSION: ${{ steps.get_version.outputs.ZITI_VERSION }}
     steps:
       - name: Git Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0