💚 Update tags syntax in .gitlab-ci.yml

.gitlab-ci.yml

@@ -6,7 +6,8 @@ stages:
 
 build:
   stage: build
-  tags: grouprunner
+  tags: 
+    - grouprunner
   script:
     - mkdir build
     - cd build
@@ -22,7 +23,8 @@ build:
 
 test:
   stage: test
-  tags: grouprunner
+  tags:
+    - grouprunner
   script:
     - echo pass | sudo -S mkdir -m 777 -p /mnt/pmem/test
     - cd build
@@ -32,7 +34,8 @@ test:
 
 coverage:
   stage: build
-  tags: grouprunner
+  tags: 
+    - grouprunner
   script:
     - echo pass | sudo -S dnf -y install python-pip
     - pip install gcovr --user