chore: upgrade services to v3.1

chore: remove unused image

Author: dmijatovic

docker-compose.yml

@@ -4,7 +4,7 @@
 
 services:
   database:
-    image: ghcr.io/research-software-directory/rsd-saas/database:v2.29.0
+    image: ghcr.io/research-software-directory/rsd-saas/database:v3.1.0
     ports:
       # enable connection from outside (development mode)
       - "5432:5432"
@@ -23,7 +23,7 @@ services:
       - net
 
   backend:
-    image: ghcr.io/research-software-directory/rsd-saas/backend:v2.29.0
+    image: ghcr.io/research-software-directory/rsd-saas/backend:v3.1.0
     expose:
       - 3500
     environment:
@@ -39,7 +39,7 @@ services:
       - net
 
   auth:
-    image: ghcr.io/research-software-directory/rsd-saas/auth:v2.29.0
+    image: ghcr.io/research-software-directory/rsd-saas/auth:v3.1.0
     ports:
       - 5005:5005
     expose:
@@ -85,7 +85,7 @@ services:
       ]
 
   scrapers:
-    image: ghcr.io/research-software-directory/rsd-saas/scrapers:v2.29.0
+    image: ghcr.io/research-software-directory/rsd-saas/scrapers:v3.1.0
     environment:
       # it uses values from .env file
       - POSTGREST_URL