Update black tests (#8278)

Update black tests to
c369e446f9

crates/ruff_python_formatter/resources/test/fixtures/black/miscellaneous/force_pyi.py

@@ -1,3 +1,4 @@
+# flags: --pyi
 from typing import Union
 
 @bird

crates/ruff_python_formatter/resources/test/fixtures/black/miscellaneous/string_quotes.py

@@ -1,4 +1,5 @@
 ''''''
+
 '\''
 '"'
 "'"

crates/ruff_python_formatter/resources/test/fixtures/black/miscellaneous/string_quotes.py.expect

@@ -1,4 +1,5 @@
 """"""
+
 "'"
 '"'
 "'"

crates/ruff_python_formatter/resources/test/fixtures/black/raw_docstring.py

@@ -0,0 +1,16 @@
+# flags: --preview --skip-string-normalization
+class C:
+
+    r"""Raw"""
+
+def f():
+
+    r"""Raw"""
+
+class SingleQuotes:
+
+
+    r'''Raw'''
+
+class UpperCaseR:
+    R"""Raw"""

crates/ruff_python_formatter/resources/test/fixtures/black/raw_docstring.py.expect

@@ -0,0 +1,14 @@
+class C:
+    r"""Raw"""
+
+
+def f():
+    r"""Raw"""
+
+
+class SingleQuotes:
+    r'''Raw'''
+
+
+class UpperCaseR:
+    R"""Raw"""