try fix audio library reference....

Author: newdigate

.github/workflows/audio-test.yml

@@ -63,7 +63,7 @@ jobs:
 
       - uses: actions/checkout@v2
         with:
-          repository: greiman/SdFat.git
+          repository: PaulStoffregen/SdFat.git
           path: deps/SdFat
           fetch-depth: 1
           ref: master