deps: Upgrade material_color_utilities, source_span via flutter pub get

Much like the `meta` package a few weeks ago in 0b89ce9, I don't
understand why this causes an update, but it does.

Author: chrisbobbe

pubspec.lock

@@ -405,10 +405,10 @@ packages:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: d92141dc6fe1dad30722f9aa826c7fbc896d021d792f80678280601aff8cf724
+      sha256: "586678f20e112219ed0f73215f01bcdf1d769824ba2ebae45ad918a9bfde9bdb"
       url: "https://pub.dev"
     source: hosted
-    version: "0.2.0"
+    version: "0.3.0"
   meta:
     dependency: transitive
     description:
@@ -634,10 +634,10 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      sha256: dd904f795d4b4f3b870833847c461801f6750a9fa8e61ea5ac53f9422b31f250
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
       url: "https://pub.dev"
     source: hosted
-    version: "1.9.1"
+    version: "1.10.0"
   stack_trace:
     dependency: transitive
     description: