ci(fix): fix path to coverage-*.xml for non-reports artifacts

.gitlab-ci.yml

@@ -123,7 +123,7 @@ py3-server:
     paths:
       - /builds/cubicweb/cubicweb/server.html
       - /builds/cubicweb/cubicweb/py3-server-deprecated-warnings.json
-      - /reports/coverage-server.xml
+      - /builds/cubicweb/cubicweb/reports/coverage-server.xml
     reports:
       junit: /builds/cubicweb/cubicweb/server.xml
       cobertura: /builds/cubicweb/cubicweb/reports/coverage-server.xml
@@ -152,7 +152,7 @@ py3-web:
     paths:
       - /builds/cubicweb/cubicweb/web.html
       - /builds/cubicweb/cubicweb/py3-web-deprecated-warnings.json
-      - /reports/coverage-web.xml
+      - /builds/cubicweb/cubicweb/reports/coverage-web.xml
     reports:
       junit: /builds/cubicweb/cubicweb/web.xml
       cobertura: /builds/cubicweb/cubicweb/reports/coverage-web.xml
@@ -181,7 +181,7 @@ py3-misc:
     paths:
       - /builds/cubicweb/cubicweb/misc.html
       - /builds/cubicweb/cubicweb/py3-misc-deprecated-warnings.json
-      - /reports/coverage-misc.xml
+      - /builds/cubicweb/cubicweb/reports/coverage-misc.xml
     reports:
       junit: /builds/cubicweb/cubicweb/misc.xml
       cobertura: /builds/cubicweb/cubicweb/reports/coverage-misc.xml