Update Polly dependency to latest release?

[martincostello]

Is your feature request related to a problem? Please describe.

ASP.NET Core currently depends on Polly 7.1.0, which was released in March 2019.

aspnetcore/eng/Versions.props

Line 249 in 1870441

<PollyVersion>7.1.0</PollyVersion>

Since then there have been a number of minor releases, the most recent being yesterday to 7.2.2, to fix a number of bugs and minor improvements (CHANGELOG).

Describe the solution you'd like

Update the Polly dependency to the latest release, 7.2.2.

Updating to at least 7.2.0 would also make the new IConcurrentPolicyRegistry interface available, which could then be registered by default in the Polly extensions for HttpClientFactory: #28283 (comment).

Assuming there isn't a specific reason to pin the dependency at 7.1.0, I'd be happy to raise a PR to update the minimum version for ASP.NET Core 6.0.

[javiercn]

@martincostello thanks for contacting us.

Are there known breaking changes between 7.2.2 and 7.1.0? I think we would be open to a PR if there are no breaking changes, otherwise we would need to evaluate the impact.

[ghost]

Thanks for contacting us.
We're moving this issue to the Next sprint planning milestone for future evaluation / consideration. Because it's not immediately obvious that this is a bug in our framework, we would like to keep this around to collect more feedback, which can later help us determine the impact of it. We will re-evaluate this issue, during our next planning meeting(s).
If we later determine, that the issue has no community involvement, or it's very rare and low-impact issue, we will close it - so that the team can focus on more important and high impact issues.
To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.

[martincostello]

@javiercn No, there shouldn't be any breaking changes. There's no changes to the public API other than the addition of the new IConcurrentPolicyRegistry interface and PolicyRegistry implementing it. All the other changes are just bug fixes.

If you'd be happy to accept a PR to update the dependency then I'll open one later on today 👍

[javiercn]

@martincostello go for it.

[BrennanConroy]

Done via #31708