make release branch regex more specific

.gitlab-ci.yml

@@ -76,7 +76,7 @@ deploy-prod-release-prod-cscs:
     RELEASE_NAME: EBRAINS-23.06
   resource_group: shared-NFS-mount-prod-cscs
   rules:
-    - if: $CI_COMMIT_BRANCH =~ /ebrains/
+    - if: $CI_COMMIT_BRANCH =~ /^ebrains/
       when: manual
 
 # Deploy the production release of tools (manual pipeline)
@@ -94,7 +94,7 @@ deploy-prod-release-prod-jsc:
     RELEASE_NAME: EBRAINS-23.06
   resource_group: shared-NFS-mount-prod-jsc
   rules:
-    - if: $CI_COMMIT_BRANCH =~ /ebrains/
+    - if: $CI_COMMIT_BRANCH =~ /^ebrains/
       when: manual
 
 # Deploy the experimental release of tools (sheduled pipeline)