github run chapters even if others fail

Author: hjwp

.github/workflows/tests.yml

@@ -53,10 +53,12 @@ jobs:
         env
 
     - name: Test chapter 1
+      if: always()
       run: |
         make test_chapter_01
 
     - name: Test chapter 2
+      if: always()
       run: |
         make test_chapter_02_unittest