build: Use webcrypto from github to fix 16kb

pubspec.lock

@@ -2210,12 +2210,13 @@ packages:
     source: hosted
     version: "3.0.3"
   webcrypto:
-    dependency: transitive
+    dependency: "direct overridden"
     description:
-      name: webcrypto
-      sha256: "6b43001c4110856ff7fa5e5e65e7b2d44bec1d8b54a4d84d5fa2c7622267c5c1"
-      url: "https://pub.dev"
-    source: hosted
+      path: "."
+      ref: master
+      resolved-ref: dcc7ba78c9721de56a800fda9a9e2bc759b9cad3
+      url: "https://github.com/google/webcrypto.dart.git"
+    source: git
     version: "0.6.0"
   webdriver:
     dependency: transitive

pubspec.yaml

@@ -119,3 +119,10 @@ flutter:
 # 2. Always link an (upstream?) issue
 # 3. Explain how and when this can be removed (overrides must be temporarily)
 dependency_overrides:
+  # To fix 16kb compatiblity in PlayStore. It is fixed in main branch but
+  # not yet published:
+  # https://github.com/google/webcrypto.dart/issues/207
+  webcrypto:
+    git:
+      url: https://github.com/google/webcrypto.dart.git
+      ref: master