Fix reduce() return type signature

[levimatheri]

Fix reduce() return type signature.
Note: The documentation indicates the correct return type of any.

Before:

After:

Microsoft Reviewers: Open in CodeFlow

[github-actions]

Test this change out locally with the following install scripts (Action run 11449627792)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 11449627792

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 11449627792"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 11449627792

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 11449627792"

[github-actions]

Dotnet Test Results

    72 files   -     36      72 suites   - 36   29m 58s ⏱️ - 11m 45s
11 373 tests  -     25  11 373 ✅  -     25  0 💤 ±0  0 ❌ ±0 
26 477 runs   - 13 234  26 477 ✅  - 13 234  0 💤 ±0  0 ❌ ±0 

Results for commit 5655321. ± Comparison against base commit 12531f1.