Add missing requirements for rtmidi in GitHub actions

Author: rdoursenaud

.github/workflows/pylint.yml

@@ -13,6 +13,10 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: 3.9
+    - name: Install required headers
+      run: |
+        sudo apt update
+        sudo apt install libasound2-dev
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/python-app.yml

@@ -20,6 +20,10 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: 3.9
+    - name: Install required headers
+      run: |
+        sudo apt update
+        sudo apt install libasound2-dev
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip