docs: Update examples to 1.2.0

Author: kyleconroy

examples/sqlc.yaml

@@ -2,8 +2,8 @@ version: '2'
 plugins:
 - name: py
   wasm:
-    url: https://downloads.sqlc.dev/plugin/sqlc-gen-python_1.1.0.wasm
-    sha256: ef58f143a8c116781091441770c7166caaf361dd645f62b8f05f462e9f95c3b2
+    url: https://downloads.sqlc.dev/plugin/sqlc-gen-python_1.2.0.wasm
+    sha256: a6c5d174c407007c3717eea36ff0882744346e6ba991f92f71d6ab2895204c0e
 sql:
 - schema: "src/authors/schema.sql"
   queries: "src/authors/query.sql"