ci: Update outpost version in compose.yml to 0.5.0 (#473)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

examples/docker-compose/compose.yml

@@ -1,7 +1,7 @@
 name: outpost-example
 services:
   api:
-    image: hookdeck/outpost:v0.4.1
+    image: hookdeck/outpost:v0.5.0
     env_file: .env
     depends_on:
       redis:
@@ -14,7 +14,7 @@ services:
       - 3333:3333
 
   delivery:
-    image: hookdeck/outpost:v0.4.1
+    image: hookdeck/outpost:v0.5.0
     env_file: .env
     depends_on:
       redis:
@@ -25,7 +25,7 @@ services:
       SERVICE: delivery
 
   log:
-    image: hookdeck/outpost:v0.4.1
+    image: hookdeck/outpost:v0.5.0
     env_file: .env
     depends_on:
       redis: