chore(lsprotocol): migrate to 2025.0.0 and cleanup artifacts

The changes align the project with the 2025.0.0 lsprotocol
release, removing the old backport and updating type hints
in the protocol hooks to use Sequence where appropriate. The
dist-info and packaging metadata for older lsprotocol
versions are replaced with the new 2025.0.0 artifacts.

- Remove exceptiongroup backport used on Python <3.11
- Use Sequence instead of List in LS protocol hooks
- Replace old dist-info with 2025.0.0 metadata

server/libs/packaging/_tokenizer.py

@@ -3,13 +3,18 @@ from __future__ import annotations
 import contextlib
 import re
 from dataclasses import dataclass
-from typing import Generator, Mapping, NoReturn
+from typing import TYPE_CHECKING, NoReturn
 
 from .specifiers import Specifier
 
+if TYPE_CHECKING:
+    from collections.abc import Generator, Mapping
+
 
 @dataclass
 class Token:
+    __slots__ = ("name", "position", "text")
+
     name: str
     text: str
     position: int
@@ -84,7 +89,7 @@ DEFAULT_RULES: dict[str, re.Pattern[str]] = {
     "VERSION_PREFIX_TRAIL": re.compile(r"\.\*"),
     "VERSION_LOCAL_LABEL_TRAIL": re.compile(r"\+[a-z0-9]+(?:[-_\.][a-z0-9]+)*"),
     "WS": re.compile(r"[ \t]+"),
-    "END": re.compile(r"$"),
+    "END": re.compile(r"\Z"),
 }
 
 
@@ -95,6 +100,8 @@ class Tokenizer:
     matches.
     """
 
+    __slots__ = ("next_token", "position", "rules", "source")
+
     def __init__(
         self,
         source: str,
@@ -135,7 +142,7 @@ class Tokenizer:
     def expect(self, name: str, *, expected: str) -> Token:
         """Expect a certain token name next, failing with a syntax error otherwise.
 
-        The token is *not* read.
+        The token is read and returned.
         """
         if not self.check(name):
             raise self.raise_syntax_error(f"Expected {expected}")