Incorporate review suggestions

* Use Python 3.10 as base images.
* Change path to executable when calling exercise app in job run.

.gitlab-ci.yml

@@ -12,7 +12,7 @@ stages:
   - run
 
 license_compliance:
-  image: python:3.9
+  image: python:3.10
   stage: lint
   before_script:
     - pip install --upgrade pip
@@ -21,7 +21,7 @@ license_compliance:
     - reuse lint
 
 lint:
-  image: python:3.9
+  image: python:3.10
   stage: lint
   before_script:
     - pip install --upgrade pip
@@ -105,7 +105,7 @@ run:
   image: gcc:11
   stage: run
   script:
-    - cd build/bin/ && ./helloWorld
+    - ./build/bin/helloWorld
   dependencies:
     - build:gcc:11