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](actions/checkout@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>

Author: dependabot[bot]

.github/workflows/custopize.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
 
     - name: "⬇ Checkout"
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: "🔎 Get OctoPrint Version"
       id: octoprint_latestrelease

.github/workflows/dispatch.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
 
     - name: ⬇ Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - id: my_latestrelease
       name: 🔎 Get My Version