Update github actions "checkout" and "upload-artifacts" to v4

The v3 actions use Node 16 which is now deprecated and will be phased out.
To fix this we will use the v4 actions which are based on Node20.
For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

.github/workflows/main.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: install-deps
@@ -49,7 +49,7 @@ jobs:
           meson compile -C build_arm openrtx_gd77_wrap
           meson compile -C build_arm openrtx_dm1801_wrap
           meson compile -C build_arm openrtx_mod17_wrap
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: release-bins
           path: |
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: install-deps

.github/workflows/regenerate_symbols.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: install-deps