remove comma from base types pattern (#538)

im using this schema and json schema faker to generate tests and this address schema pattern generates addresses with commas in them

src/schemas/base-types.yaml

@@ -1,7 +1,7 @@
 address:
   title: hex encoded address
   type: string
-  pattern: ^0x[0-9,a-f,A-F]{40}$
+  pattern: ^0x[0-9a-fA-F]{40}$
 addresses:
   title: hex encoded address
   type: array
@@ -10,7 +10,7 @@ addresses:
 byte:
   title: hex encoded byte
   type: string
-  pattern: ^0x([0-9,a-f,A-F]?){1,2}$
+  pattern: ^0x([0-9a-fA-F]?){1,2}$
 bytes:
   title: hex encoded bytes
   type: string