Regenerate GitHub Actions workflow

Executed command: sbt githubWorkflowGenerate

Author: http4s-steward[bot]

.github/workflows/ci.yml

@@ -189,12 +189,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.17, rootJVM)
+      - name: Download target directories (2.12.19, rootJVM)
         uses: actions/download-artifact@v2
         with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.17-rootJVM
+          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.19-rootJVM
 
-      - name: Inflate target directories (2.12.17, rootJVM)
+      - name: Inflate target directories (2.12.19, rootJVM)
         run: |
           tar xf targets.tar
           rm targets.tar