github workflow update

Author: ghik

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.4, 2.12.13]
+        scala: [2.13.4, 2.12.12]
         java: [adopt@1.11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -127,12 +127,12 @@ jobs:
           tar xf targets.tar
           rm targets.tar
 
-      - name: Download target directories (2.12.13)
+      - name: Download target directories (2.12.12)
         uses: actions/download-artifact@v2
         with:
-          name: target-${{ matrix.os }}-2.12.13-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.12-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.13)
+      - name: Inflate target directories (2.12.12)
         run: |
           tar xf targets.tar
           rm targets.tar