[azure-core-cpp] Update to 1.2.0 (#19393)

## 1.2.0 (2021-08-05)

### Features Added

- Added `Azure::Core::IO::ProgressBodyStream` type that wraps an existing BodyStream based type stream and reports progress via callback when the stream position is updated.

### Bugs Fixed

- [2647](https://github.com/Azure/azure-sdk-for-cpp/issues/2647) Make the curl transport adapter to check the connection close header.
- [2474](https://github.com/Azure/azure-sdk-for-cpp/issues/2474) Fix compiling with MSVC and `/analyze`.
- Make WinHTTP transport adapter to NOT use SSL/TLS for unsecured HTTP connections.

### Other Changes

- Updated source code to build with Clang 11. (A community contribution, courtesy of _[davidchisnall](https://github.com/davidchisnall)_)

### Acknowledgments

Thank you to our developer community members who helped to make Azure Core better with their contributions to this release:

- David Chisnall _([GitHub](https://github.com/davidchisnall))_

ports/azure-core-cpp/portfile.cmake

@@ -1,8 +1,8 @@
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO Azure/azure-sdk-for-cpp
-    REF azure-core_1.1.0
-    SHA512 83d8ba283179531fbd5b1e81b468b5fdb1d3aa846b2b9edd579a4e56a44f412986ad3558c98009a274e8c8fda301a5a434caf62dd990e3d9e8b07993d5218520
+    REF azure-core_1.2.0
+    SHA512 03297bcb54156730a35467bfd1591d07c0ef131c6183ac97f98ab845f32103cd930bb99e0fee2f334f64dceece866ec0c5e9c4ad91c96299c6fb08537a863983
 )
 
 vcpkg_check_features(
@@ -14,7 +14,6 @@ vcpkg_check_features(
 
 vcpkg_cmake_configure(
     SOURCE_PATH ${SOURCE_PATH}/sdk/core/azure-core/
-    PREFER_NINJA
     OPTIONS
         ${FEATURE_OPTIONS}
         -DWARNINGS_AS_ERRORS=OFF

ports/azure-core-cpp/vcpkg.json

@@ -1,6 +1,6 @@
 {
   "name": "azure-core-cpp",
-  "version-semver": "1.1.0",
+  "version-semver": "1.2.0",
   "description": [
     "Microsoft Azure Core SDK for C++",
     "This library provides shared primitives, abstractions, and helpers for modern Azure SDK client libraries written in the C++."

versions/a-/azure-core-cpp.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "68831f9976e41448ebf74ead081d41ce09042c38",
+      "version-semver": "1.2.0",
+      "port-version": 0
+    },
     {
       "git-tree": "b330962cc2223833ef92e2be4e8d7e825dd3e141",
       "version-semver": "1.1.0",

versions/baseline.json

@@ -273,7 +273,7 @@
       "port-version": 1
     },
     "azure-core-cpp": {
-      "baseline": "1.1.0",
+      "baseline": "1.2.0",
       "port-version": 0
     },
     "azure-identity-cpp": {