ci: utilise ci-config 6.0.2.

.gitlab-ci.yml

 include:
   - project: pole-is/tools/ci-config
-    ref: "6.x"
+    ref: "6.0.2"
     file:
         - /php/multiversions.yml
         - /php/packagist.yml
-
-packagist:
-  script: |
-      set -x ;
-      curl \
-        --request POST \
-        --header 'Accept: *' \
-        --header 'Content-type: application/json' \
-        --user-agent 'irstea-ci-config/6.x (contact: dsi.poleis@irstea.fr)' \
-        --fail \
-        "https://packagist.org/api/update-package?username=${PACKAGIST_USERNAME}&apiToken=${PACKAGIST_TOKEN}" \
-        --data '{"repository":{"url":"https://'${CI_SERVER_HOST}'/'${CI_PROJECT_PATH}'.git"}}'