update schedule workflow to run on python 3.8

Author: ravinkohli

.github/workflows/pytest.yml

@@ -1,12 +1,6 @@
 name: Tests
 
-on:
-  push:
-  pull_request:
-  schedule:
-    # Every Monday at 7AM UTC
-    - cron: '0 07 * * 1'
-
+on: [push, pull_request]
 
 jobs:
   ubuntu:
@@ -56,4 +50,4 @@ jobs:
       uses: codecov/codecov-action@v1
       with:
         fail_ci_if_error: true
-        verbose: true
+        verbose: true

.github/workflows/scheduled_test.yml

@@ -1,8 +1,6 @@
 name: Tests
 
 on:
-  push:
-  pull_request:
   schedule:
     # Every Monday at 7AM UTC
     - cron: '0 07 * * 1'
@@ -14,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.8]
       fail-fast:  false
       max-parallel: 2