Add coerce_numbers_to_str option in StringSchema (#1262)

Author: NeevCohen

python/pydantic_core/core_schema.py

@@ -752,6 +752,7 @@ class StringSchema(TypedDict, total=False):
     to_upper: bool
     regex_engine: Literal['rust-regex', 'python-re']  # default: 'rust-regex'
     strict: bool
+    coerce_numbers_to_str: bool
     ref: str
     metadata: Any
     serialization: SerSchema

src/validators/string.rs

@@ -208,6 +208,7 @@ impl StrConstrainedValidator {
             || self.strip_whitespace
             || self.to_lower
             || self.to_upper
+            || self.coerce_numbers_to_str
     }
 }