Fix VS Bicep build

[StephenWeatherford]

Microsoft Reviewers: Open in CodeFlow

Unit tests still disabled. There's one code change, everything else is updating assemblies, silencing warnings, etc.

[github-actions]

Test this change out locally with the following install scripts (Action run 9768110932)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 9768110932

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 9768110932"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 9768110932

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 9768110932"

[github-actions]

Dotnet Test Results

    72 files   -     36      72 suites   - 36   22m 54s ⏱️ - 8m 22s
10 932 tests  -     18  10 932 ✅  -     17  0 💤  - 1  0 ❌ ±0 
25 760 runs   - 12 870  25 760 ✅  - 12 867  0 💤  - 3  0 ❌ ±0 

Results for commit 4935439. ± Comparison against base commit b81102e.

♻️ This comment has been updated with latest results.