Fixed deprecation warning as of Python 3.14 in Emoji extension

This is to address Issue #8446

Also:
- Added uv.lock to .gitignore to make it easier to test with uv virtual environments using things like a release candidate version of Python

.gitignore

@@ -65,3 +65,6 @@ tmp
 # IDEs & Editors
 .idea
 *~
+
+# uv Python package manager
+uv.lock

material/extensions/emoji.py

@@ -20,7 +20,6 @@
 
 from __future__ import annotations
 
-import codecs
 import functools
 import material
 import os
@@ -65,7 +64,7 @@ def to_svg(
 # Load icon
 @functools.lru_cache(maxsize = None)
 def _load(file: str):
-    with codecs.open(file, encoding = "utf-8") as f:
+    with open(file, encoding = "utf-8") as f:
         return f.read()
 
 # Load twemoji index and add icons

src/extensions/emoji.py

@@ -20,7 +20,6 @@
 
 from __future__ import annotations
 
-import codecs
 import functools
 import material
 import os
@@ -65,7 +64,7 @@ def to_svg(
 # Load icon
 @functools.lru_cache(maxsize = None)
 def _load(file: str):
-    with codecs.open(file, encoding = "utf-8") as f:
+    with open(file, encoding = "utf-8") as f:
         return f.read()
 
 # Load twemoji index and add icons