CI: Build OD every month

.github/workflows/main.yml

@@ -8,6 +8,8 @@ on:
   pull_request:
     branches:
       - opendingux
+  schedule:
+    - cron: '* * 1 * *'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -16,7 +18,7 @@ concurrency:
 jobs:
   build:
     name: Build
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     container:
       image: ghcr.io/opendingux/retro-toolchain/buildroot
 
@@ -55,17 +57,17 @@ jobs:
         TOP_MAKE_COMMAND: utils/brmake
         BR2_JLEVEL: 0
         FORCE_UNSAFE_CONFIGURE: 1
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: toolchain-${{ matrix.target }}
         path: |
           output/${{ matrix.target }}/images/*.tar*
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: update-${{ matrix.target }}
         path: |
           output/${{ matrix.target }}/images/*.opk
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: always()
       with:
         name: ${{ matrix.target }}-log
@@ -85,19 +87,19 @@ jobs:
         TOP_MAKE_COMMAND: utils/brmake
         BR2_JLEVEL: 0
         FORCE_UNSAFE_CONFIGURE: 1
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: ${{ matrix.target == 'rs90' }}
       with:
         name: odboot-client-linux
         path: |
           output/installer/images/odboot-client
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: ${{ matrix.target == 'rs90' }}
       with:
         name: vmlinuz
         path: |
           output/installer/images/vmlinuz.bin
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       if: ${{ matrix.target == 'rs90' && always() }}
       with:
         name: ${{ matrix.target }}-installer-log
@@ -106,7 +108,7 @@ jobs:
 
   build-win:
     name: Build odbootd (Windows)
-    runs-on: windows-2019
+    runs-on: windows-latest
     needs: build
     defaults:
       run:
@@ -146,7 +148,7 @@ jobs:
       with:
         repository: 'OpenDingux/odbootd'
         path: 'odbootd'
-    - uses: actions/download-artifact@v2
+    - uses: actions/download-artifact@v4
       with:
         name: vmlinuz
         path: odbootd
@@ -155,7 +157,7 @@ jobs:
         PKG_CONFIG_PATH=/usr/lib/pkgconfig cmake -DWITH_ODBOOTD=OFF -DSTATIC_EXE=ON -DEMBEDDED_INSTALLER=vmlinuz.bin -Bbuild -G "MSYS Makefiles"
         cmake --build build --config Release
       working-directory: odbootd
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
         name: odboot-client-windows
         path: |