Bump dependencies

Author: kzu

src/VisualStudio/NuGet.Packaging.VisualStudio.15/project.json

@@ -8,16 +8,16 @@
     "Merq.Async": "1.1.17-rc",
     "Merq.VisualStudio": "1.1.17-rc",
     "Microsoft.Build": "15.1.548",
-    "Microsoft.VisualStudio.ProjectSystem.SDK": "15.0.743",
+    "Microsoft.VisualStudio.ProjectSystem.SDK": "15.0.751",
     "Microsoft.VisualStudio.Shell.14.0": "14.3.25407",
     "Microsoft.VisualStudio.Shell.Framework": "15.0.26201",
     "Microsoft.VisualStudio.Shell.Interop.11.0": "11.0.61030",
     "Microsoft.VSSDK.BuildTools": "15.0.26201",
     "MSBuilder.DumpItems": "0.2.1",
     "MSBuilder.Introspect": "0.1.5",
     "MSBuilder.ThisAssembly.Project": "0.3.3",
-    "MSBuilder.VsixDependency": "0.2.7",
-    "MSBuilder.VsixInstaller": "0.2.11",
+    "MSBuilder.VsixDependency": "0.2.8",
+    "MSBuilder.VsixInstaller": "0.2.13",
     "VSLangProj150": "1.0.0",
     "VSSDK.ComponentModelHost.11": "11.0.4"
   },