Install espflash build system dependency for ubuntu

.github/workflows/package.yml

@@ -19,6 +19,13 @@ jobs:
     runs-on: ${{ inputs.runs_on }}
 
     steps:
+      - name: Change apt mirror and install dependencies
+        if: ${{ inputs.runs_on == 'ubuntu-latest' }}
+        run: |
+          sudo sed -i 's/azure.archive.ubuntu.com/archive.ubuntu.com/' /etc/apt/sources.list
+          sudo apt-get update
+          sudo apt-get install musl-tools libudev-dev
+
       - uses: actions/checkout@v2
 
       - uses: actions-rs/toolchain@v1