Bump Aspire.Hosting.Testing from 13.4.4 to 13.4.5

[dependabot]

Updated Aspire.Hosting.Testing from 13.4.4 to 13.4.5.

Release notes

Sourced from Aspire.Hosting.Testing's releases.

13.4.5

What's New in Aspire 13.4.5

Patch release for Aspire 13.4 clearing a transitive MessagePack security advisory, tightening CLI validation for Playwright configuration, and adding coding-agent detection to CLI telemetry.

🐛 Fixes

• 🛡️ Bumped StreamJsonRpc to 2.25.29 to clear the MessagePack GHSA-hv8m-jj95-wg3x (CVE-2026-48109) NU1903 advisory — The transitive MessagePack 2.5.192 dependency pulled in via StreamJsonRpc 2.22.23 fell within the advisory's vulnerable LZ4 decompression range. Aspire does not use MessagePackFormatter or LZ4 — all StreamJsonRpc calls use SystemTextJsonFormatter over local Unix sockets — so the vulnerability was not reachable in practice. The bump clears the NU1903 warning for consumers of the Aspire.Hosting package. (#​18204, @​mitchdenny)
• 🎭 playwrightCliVersion values that are not valid SemVer 2.0 now fail fast with a clear diagnostic — Previously an invalid override (range expression, dist-tag like latest, or a v-prefixed string) would surface as a generic npm resolution failure. The value is now validated with strict SemVer parsing at startup; an error naming the configuration key and the offending value is emitted immediately. (#​18205, @​mitchdenny)
• 🤖 CLI telemetry now detects and reports the calling coding agent — When the Aspire CLI is invoked from inside a known coding agent environment (GitHub Copilot CLI, VS Code Copilot agent, etc.) the agent name is included in the main CLI telemetry event. GitHub Copilot CLI is specifically identified as copilot-cli. (#​18240, @​damianedwards)

🏷️ Housekeeping

• 📄 Refreshed the @​microsoft/aspire-cli npm package README to be TypeScript-only — updated examples to the current ts-starter template (apphost.mts / aspire.mjs), added a backing-services snippet showing aspire add for PostgreSQL and Redis, and documented aspire dashboard run as a standalone dashboard option. (#​18221, @​adamint)

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Full Changelog: v13.4.4...v13.4.5

Full commit: 73114e86c64aeb9f3f3c7da8e37df1ae4281b27e

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