update db job to be tied to postgres alpine 16 (#78)

Co-authored-by: wizzdom <dom@wizzdom.xyz>

jobs/services/postgres.hcl

@@ -27,7 +27,7 @@ EOH
       }
 
       config {
-        image = "postgres:latest"
+        image = "postgres:16-alpine"
         ports = ["db"]
 
         volumes = [

jobs/socs/dcusr-outline.hcl

@@ -126,7 +126,7 @@ EOH
       driver = "docker"
 
       config {
-        image = "postgres:alpine"
+        image = "postgres:16-alpine"
         ports = ["db"]
 
         volumes = [