Replace deprecated rules

- Rule "compact_nullable_typehint" is deprecated. Use "compact_nullable_type_declaration" instead.
- Rule "escape_implicit_backslashes" is deprecated. Use "string_implicit_backslashes" instead.
- Rule "native_function_type_declaration_casing" is deprecated. Use "native_type_declaration_casing" instead.

Author: shirshir

src/PhpCsFixer/Rules.php

@@ -113,12 +113,12 @@ private static function getBaseRules(): array
             'combine_consecutive_issets' => true,
             'combine_consecutive_unsets' => true,
             'combine_nested_dirname' => true,
-            'compact_nullable_typehint' => true,
+            'compact_nullable_type_declaration' => true,
             'concat_space' => [
                 'spacing' => 'one',
             ],
             'dir_constant' => true,
-            'escape_implicit_backslashes' => true,
+            'string_implicit_backslashes' => true,
             'explicit_indirect_variable' => true,
             'explicit_string_variable' => true,
             'fully_qualified_strict_types' => true,
@@ -141,7 +141,7 @@ private static function getBaseRules(): array
             'modernize_types_casting' => true,
             'multiline_comment_opening_closing' => true,
             'multiline_whitespace_before_semicolons' => true,
-            'native_function_type_declaration_casing' => true,
+            'native_type_declaration_casing' => true,
             'no_alias_functions' => true,
             'no_alternative_syntax' => true,
             'no_extra_blank_lines' => [