Update pytest commands to adjust coverage reporting

Revised `.gitlab-ci.yml` to streamline test execution. Enabled coverage reporting for the Linux job while explicitly disabling it in other jobs using `--no-cov`.

.gitlab-ci.yml

@@ -243,7 +243,7 @@ ctest-linux:
     - conda activate morpheme-build            # activate `morpheme-build` env
     - conda activate --stack $CI_PROJECT_NAME  # activate target env, stacked on top of `morpheme-build`
     - conda list                               # list conda packages in environment for debugging purposes
-    - pytest --junitxml=report.xml tst         # run tests located in `tst/` & generate an XML report
+    - pytest                                   # run tests located in `tst/` & generate a coverage report
   artifacts:
     when: always
     reports:
@@ -263,7 +263,7 @@ ctest-osx:
     - conda activate morpheme-build            # activate `morpheme-build` env
     - conda activate --stack $CI_PROJECT_NAME  # activate target env, stacked on top of `morpheme-build`
     - conda list                               # list conda packages in environment for debugging purposes
-    - pytest tst                               # run tests located in `tst/` (XML coverage report is done in linux job)
+    - pytest --no-cov                          # run tests located in `tst/` (XML coverage report is done in linux job)
   rules:
     - when: always
 
@@ -277,7 +277,7 @@ ctest-osx-arm64:
     - conda activate morpheme-build            # activate `morpheme-build` env
     - conda activate --stack $CI_PROJECT_NAME  # activate target env, stacked on top of `morpheme-build`
     - conda list                               # list conda packages in environment for debugging purposes
-    - pytest tst                               # run tests located in `tst/` (XML coverage report is done in linux job)
+    - pytest --no-cov                          # run tests located in `tst/` (XML coverage report is done in linux job)
   rules:
     - when: always
 
@@ -293,7 +293,7 @@ ctest-windows:
     - conda activate morpheme-build            # activate `morpheme-build` env
     - conda activate -stack $CI_PROJECT_NAME   # activate target env, stacked on top of `morpheme-build`
     - conda list                               # list conda packages in environment for debugging purposes
-    - pytest tst                               # run tests located in `tst/` (XML coverage report is done in linux job)
+    - pytest --no-cov                          # run tests located in `tst/` (XML coverage report is done in linux job)
   rules:
     - when: always