Ensure wix tooling is up to date in staging pipeline

[mmitche]

• This issue is blocking
• This issue is causing unreasonable pain

After changes to the wix tooling to support some key scenarios, we are using a new version in RC2+. Because we relink after signing in the staging pipeline, we need to update the version of the tooling we use there too, if it hasn't already been done transparently (I can't remember how the version is specified)

Here is the tooling package to use: https://netcorenativeassets.blob.core.windows.net/resource-packages/external/windows/wix/Microsoft.Signed.Wix-1.0.0-v3.14.0.4118.zip

[mmitche]

/cc @joeloff @adiaaida

[MattGal]

[Async Triage]: Small change which is necessary in Arcade which Matt has already self assigned, tossing in FR for tracking.

[michellemcdaniel]

@missymessa who may know how we specify/get the wix version

[michellemcdaniel]

FYI, the release repo is currently blocked on getting the latest arcade version (assuming that is how we get the WiX tools). I will look into it, but I'm hesitant to allow the update to 7.0 arcade for 6.0 releases, since there may be changes that break the pipeline.

[michellemcdaniel]

This target is how we get the WiX tools: https://github.com/dotnet/arcade/blob/main/src/Microsoft.DotNet.Build.Tasks.Installers/build/wix/wix.targets

[MattGal]

This was merged via #7947 (main) and #7948 (release/6.0), so closing this issue unless we also need this somewhere else (the wix.targets patched wasn't present <= release/5.0)