fix: Replace 'yaml' with 'PyYAML' in requirements files and setup.py

requirements-slim.txt

@@ -19,4 +19,4 @@ a2wsgi
 python-dotenv
 ddgs
 cloudscraper
-yaml
+PyYAML

requirements.txt

@@ -21,4 +21,4 @@ ddgs
 cloudscraper
 wasmtime
 numpy
-yaml
+PyYAML

setup.py

@@ -42,7 +42,7 @@ EXTRA_REQUIRE = {
         "cloudscraper",
         "wasmtime",
         "numpy",
-        "yaml",
+        "PyYAML",
     ],
     'slim': [
         "curl_cffi>=0.6.2",
@@ -64,7 +64,7 @@ EXTRA_REQUIRE = {
         "python-dotenv",
         "aiofile",
         "cloudscraper",
-        "yaml",
+        "PyYAML",
     ],
     "image": [
         "pillow",
@@ -82,7 +82,7 @@ EXTRA_REQUIRE = {
         "uvicorn",
         "python-multipart",
         "a2wsgi",
-        "yaml"
+        "PyYAML"
     ],
     "gui": [
         "werkzeug", "flask[async]",