Update build dependency

[tomwyr]

build_runner fails to generate code with the following error:

Precompiling executable...
Failed to precompile build_runner:build_runner:
../../flutter/.pub-cache/hosted/pub.dartlang.org/build_resolvers-1.3.7/lib/src/resolver.dart:343:10: Error: Method not found: 'SummaryBuilder'.
  return SummaryBuilder(sdkSources, sdk.context)
         ^^^^^^^^^^^^^^
../../flutter/.pub-cache/hosted/pub.dartlang.org/build_resolvers-1.3.7/lib/src/resolver.dart:332:7: Error: The setter 'useSummary' isn't defined for the class 'FolderBasedDartSdk'.
 - 'FolderBasedDartSdk' is from 'package:analyzer/src/dart/sdk/sdk.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.39.14/lib/src/dart/sdk/sdk.dart'). 
Try correcting the name to the name of an existing setter, or defining a setter or field named 'useSummary'.
    ..useSummary = false

According to this thread, the issue can be fixed by updating build_resolvers version to 1.3.10 but build_resolvers >=1.3.8 depends on build >=1.3.0 <1.4.0.