Workflow files Praat download link fix

Author: lxy2304

.github/workflows/pytest.yml

@@ -26,7 +26,7 @@ jobs:
 
     - name: Download and set up Praat
       run: |
-        wget https://www.fon.hum.uva.nl/praat/praat6421_linux-intel64-barren.tar.gz -O praat.tar.gz
+        wget https://github.com/praat/praat/releases/download/v6.4.21/praat6421_linux-intel64-barren.tar.gz -O praat.tar.gz
         tar -xvzf praat.tar.gz
         echo "praat=$(pwd)/praat_barren" >> $GITHUB_ENV
         

.github/workflows/stress-test.yml

@@ -61,7 +61,7 @@ jobs:
         
     - name: Download and set up Praat
       run: |
-        wget https://www.fon.hum.uva.nl/praat/praat6421_linux-intel64-barren.tar.gz -O praat.tar.gz
+        wget https://github.com/praat/praat/releases/download/v6.4.21/praat6421_linux-intel64-barren.tar.gz -O praat.tar.gz
         tar -xvzf praat.tar.gz
         echo "praat_path=$(pwd)/praat_barren" >> $GITHUB_ENV