Merge pull request #13 from vapor-community/enable-55-ci

Enable 5.5 in CI

Author: 0xTim

.github/workflows/ci.yml

@@ -10,13 +10,13 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - run: swift test --enable-test-discovery
-  # swift55:
-  #   container: 
-  #     image: swift:5.5
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #   - uses: actions/checkout@v2
-  #   - run: swift test
+  swift55:
+    container: 
+      image: swift:5.5
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: swift test
   bionic:
     container: 
       image: vapor/swift:5.1-bionic