chore(deps): update registry.forge.grandlyon.com/web-et-numerique/factory/llle_project/cozy-stack docker tag to v1.6.26

This MR contains the following updates:

Package	Update	Change
registry.forge.grandlyon.com/web-et-numerique/factory/llle_project/cozy-stack	minor	1.5.8 -> 1.6.26

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docker-compose.yml

 services:
   stack:
-    image: registry.forge.grandlyon.com/web-et-numerique/factory/llle_project/cozy-stack:1.5.8
+    image: registry.forge.grandlyon.com/web-et-numerique/factory/llle_project/cozy-stack:1.6.26
     container_name: cozy-stack
     depends_on:
       - cozy-db