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/build_macosx.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     runs-on: macOS-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - id: INSTALL_ADDITIONAL_BUILD_DEPENDENCIES
       run: brew install librtlsdr libusb
     - id: CONFIGURE

.github/workflows/build_snap.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
     -
       name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     -
       name: Set up QEMU
       uses: docker/setup-qemu-action@v2

.github/workflows/build_ubuntu.yml

@@ -7,7 +7,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - id: INSTALL_ADDITIONAL_BUILD_DEPENDENCIES
       run: sudo apt-get install librtlsdr-dev libusb-dev ncurses-dev
     - id: CONFIGURE

.github/workflows/dockerhub-description.yml

@@ -10,7 +10,7 @@ jobs:
   dockerHubDescription:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Docker Hub Description
       uses: peter-evans/dockerhub-description@v3
       env: