Update dependencies to their heads

[spouliot]

Commit list for xamarin/Xamarin.MacDev:

• dotnet/macios-devtools@49a17b1 VSTS 702327: Launch image sizes for iPhone XS Max and iPhone XR ([AudioUnit] Add missing MusicSequence.GetTempoTrack method #35)
• dotnet/macios-devtools@95599c5 Added new Xcode10 Watch Complication values ([Fix] Add missing C# events in the UIAdaptivePresentationControllerDelegate and UIPopoverPresentationControllerDelegate classes. #34)
• dotnet/macios-devtools@59b15be Use Version.TryParse
• dotnet/macios-devtools@2dd5fa0 Merge pull request Move parts of dontlink tests into new introspection tests #32 from xamarin/vsts-692176
• dotnet/macios-devtools@a97390f VSTS-692176: Add missing AutoFill Credential Provider entitlement
• dotnet/macios-devtools@19b14f6 Added API to get the recommended Xcode version value

Diff: dotnet/macios-devtools@39ea45b...49a17b1

Commit list for mono/mono:

• mono/mono@4d7b7ab3751 [ci] Fix Windows .msi build
• mono/mono@21dc7470bc7 [bcl] avoid false pinning in GCTest ([release/6.0.1xx-preview4] Update dependencies from dotnet/installer #11534)
• mono/mono@d9779c1df6d [interp] accept typed-by-ref as return type from a JIT call ([runtime] Add support for creating managed exceptions from native code for CoreCLR. #11538)
• mono/mono@e7e14a79297 [interp] transform delegate invoke in method body too ([dotnet][tests][link sdk] Remove [Ignore] for https://github.com/dotnet/runtime/issues/49201 #11549)
• mono/mono@cadeaf43dad [ci] Switch to new syntax of Azure Storage plugin

Diff: mono/mono@709b46e...4d7b7ab

Commit list for xamarin/maccore:

• xamarin/maccore@e73094e632 Update maciostools to head (Improve launch stability for watchOS projects. #1117)
• xamarin/maccore@4902ebbdbd Merge pull request [generator] Backport smart enum fixes from master #1105 from xamarin/swift-o-matic-optional-virtual-constructor
• xamarin/maccore@76ecea4760 Added IsOptional property.
• xamarin/maccore@77d93295bd Added a test where the init fails to ensure both paths work.
• xamarin/maccore@3d989b1ca4 Support for optional constructors in virtual classes.
• xamarin/maccore@bfdc782d0e Merge pull request [security] Add two new constants to SSLSessionConfig from Xcode 8.2 beta 1 #1100 from xamarin/swift-o-matic-constructor-mulligan
• xamarin/maccore@cf8025724d Added field and prop for ClassHandle
• xamarin/maccore@dc2e3f32fe Trimmed down ObjC constructors.
• xamarin/maccore@b53827c151 [SoM] Document CI a bit. ([replaykit] Add new FinishBroadcast method to RPBroadcastSampleHandler from Xcode 8.2 beta 1 #1101)
• xamarin/maccore@46d01c8c10 [SoM] Provision XI and Mono as well. ([watchos][passkit] Small update for Xcode 8.2 beta 1 #1099)
• xamarin/maccore@b4455eafcb bye bye old code.
• xamarin/maccore@34730dfeac Lots of changes for constructor refactoring.
• xamarin/maccore@bd09006725 Merge pull request Bump Xcode to 8.2 and update API files to match C8SR1 #1096 from xamarin/swift-o-matic-required-init
• xamarin/maccore@2af91dc79a Label those asserts!
• xamarin/maccore@ea5b501a47 It looks like cmake isn't there?
• xamarin/maccore@b50285719f Support for required init methods
• xamarin/maccore@6e7187da41 [install-qa-provisioning-profiles] Create directory before trying to create files in it. ([xharness] Give the mtouch tests 120 minutes to finish. #1095)
• xamarin/maccore@8addb4a338 Merge pull request [msbuild] Fixed IsWatchExtension state property (#913) #1092 from xamarin/swift-o-matic-objc-methods
• xamarin/maccore@9dc7111497 Removed dead code, added nfloat.
• xamarin/maccore@663279065d Removed dead code.
• xamarin/maccore@3852918abc Added code to import C# methods defined in ObjC bindings.

Diff: https://github.com/xamarin/maccore/compare/b35c3a8d7682c8482c7c749d7c1670b3d4bbed5c...e73094e6322531bcefdef95b4ec8654f596c4ae9

[monojenkins]

Build success
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ℹ️ API Diff (from PR only) (please review changes)
✅ Generator Diff (no change)
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