Use patched azure gocloud library
Fixes
@@ -6,6 +6,9 @@ CHANGELOG
- Add support for untagged outputs in Go SDK.
[#4640](https://github.com/pulumi/pulumi/pull/4640)
+- Update go-cloud to support all Azure regions
+ [#4643](https://github.com/pulumi/pulumi/pull/4643)
+
## 2.2.1 (2020-05-13)
- Add new brew target to fix homebrew builds
[#4633](https://github.com/pulumi/pulumi/pull/4633)
