update dependencies. (#190)

pubspec.lock

@@ -133,7 +133,7 @@ packages:
       name: convert
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.2"
+    version: "3.1.1"
   crypto:
     dependency: transitive
     description:
@@ -260,7 +260,7 @@ packages:
       name: flutter_webrtc
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.9+hotfix.1"
+    version: "0.9.11"
   glob:
     dependency: transitive
     description:
@@ -281,7 +281,7 @@ packages:
       name: http_parser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.1"
+    version: "4.0.2"
   import_sorter:
     dependency: "direct dev"
     description:
@@ -449,7 +449,7 @@ packages:
       name: pub_semver
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -545,7 +545,7 @@ packages:
       name: watcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "1.0.2"
   webrtc_interface:
     dependency: "direct main"
     description:
@@ -559,7 +559,7 @@ packages:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.0"
+    version: "3.0.1"
   xdg_directories:
     dependency: transitive
     description:
@@ -582,5 +582,5 @@ packages:
     source: hosted
     version: "3.1.1"
 sdks:
-  dart: ">=2.17.0 <3.0.0"
+  dart: ">=2.18.0 <3.0.0"
   flutter: ">=3.0.0"