SBOM DigestSigning request timeout

[Winniexu01]

Full log: https://dev.azure.com/dnceng/internal/_build/results?buildId=2650898&view=logs&j=76d03db3-bc49-53a7-a20b-1050f0eb5e47&t=c5bfe1c0-2818-526a-2193-056064573ca0&l=1600 (internal Microsoft link)

🛡 Generate SBoM Manifest step finished with error:

Detected SPDX 2.2 sbom in the path. Submitting for signing...
##[warning]Error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
##[warning]Error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
##[warning]Error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
##[warning]Error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
##[warning]Error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
Finished with error: Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning
##[error]Request timeout: /dnceng/internal/_apis/SBOM/DigestSigning

[ellahathaway]

This was a temporary issue. Internal sources suggest that this issue has been mitigated, so I'm going to close this.