Update ci.yml

Author: ktf

.github/workflows/ci.yml

@@ -7,8 +7,8 @@ jobs:
     name: Full build
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
-    - uses: alisw/alibuild-action@v1.4.1
+    - uses: actions/checkout@v2
+    - uses: alisw/alibuild-action@v1.4.2
       with:
         package: DebugGUI
         extra_packages: "cmake python3-pip libyaml-cpp-dev"
@@ -17,8 +17,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
-    - uses: alisw/alibuild-action@v1.4.1
+    - uses: actions/checkout@v2
+    - uses: alisw/alibuild-action@v1.4.2
       with:
         package: DebugGUI
         extra_packages: "cmake python3-pip libyaml-cpp-dev"