chore: let dependabot bump service images (#3168)

.github/dependabot.yml

@@ -12,3 +12,7 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+  - package-ecosystem: "docker"
+    directory: "pkg/config/templates"
+    schedule:
+      interval: "daily"

pkg/config/templates/Dockerfile

@@ -0,0 +1,23 @@
+FROM supabase/postgres:13.3.0
+FROM supabase/postgres:14.1.0.89
+FROM supabase/postgres:15.8.1.020
+
+# Append to ServiceImages when adding new dependencies below
+FROM library/kong:2.8.1
+FROM inbucket/inbucket:3.0.3
+FROM postgrest/postgrest:v12.2.0
+FROM supabase/postgres-meta:v0.84.2
+FROM supabase/studio:20250219-7101314
+FROM darthsim/imgproxy:v3.8.0
+FROM supabase/edge-runtime:v1.67.2
+FROM timberio/vector:0.28.1-alpine
+FROM supabase/supavisor:1.1.56
+FROM supabase/gotrue:v2.167.0
+FROM supabase/realtime:v2.34.7
+FROM supabase/storage-api:v1.14.5
+FROM supabase/logflare:1.4.0
+
+# Append to JobImages when adding new dependencies below
+FROM supabase/pgadmin-schema-diff:cli-0.0.5
+FROM supabase/migra:3.0.1663481299
+FROM supabase/pg_prove:3.36