Updated [Polly](https://github.com/App-vNext/Polly) from 8.6.6 to 8.7.0.

<details>
<summary>Release notes</summary>

_Sourced from [Polly's
releases](https://github.com/App-vNext/Polly/releases)._

## 8.7.0

## Highlights

* Adds caller cancellation token propagation in hedging and timeout
strategies by @​DaRosenberg in
App-vNext/Polly#3094
* Telemetry refactoring by @​martincostello in
App-vNext/Polly#2985

## What's Changed

* Update zizmor to 1.22.0 by @​martincostello in
App-vNext/Polly#2955
* Increase test timeout by @​martincostello in
App-vNext/Polly#2956
* Disable secrets-outside-env audit by @​martincostello in
App-vNext/Polly#2969
* Update zizmor to 1.23.1 by @​martincostello in
App-vNext/Polly#2970
* Update .NET NuGet packages by @​martincostello in
App-vNext/Polly#2982
* Add AGENTS.md by @​martincostello in
App-vNext/Polly#2983
* Fix typo in HTTP client integrations documentation by @​alexravenna in
App-vNext/Polly#2984
* Remove unused constant by @​martincostello in
App-vNext/Polly#2986
* Fix non-deterministic branch coverage in HedgingExecutionContext
hedging delay tests by @​Copilot in
App-vNext/Polly#2997
* Bump GitHubActionsTestLogger to 3.0.2 by @​martincostello in
App-vNext/Polly#3000
* Bump actionlint to v1.7.12 by @​martincostello in
App-vNext/Polly#3006
* Bump sign by @​martincostello in
App-vNext/Polly#3008
* Move Public API baselines by @​martincostello in
App-vNext/Polly#3016
* Formatting tweaks by @​martincostello in
App-vNext/Polly#3017
* Formatting tweaks by @​martincostello in
App-vNext/Polly#3018
* Remove ZIZMOR_VERSION by @​martincostello in
App-vNext/Polly#3025
* Assert nullable has result by @​martincostello in
App-vNext/Polly#3028
* Update deprecated action input by @​martincostello in
App-vNext/Polly#3035
* Move dependabot to Friday by @​martincostello in
App-vNext/Polly#3044
* Fix tag comment by @​martincostello in
App-vNext/Polly#3045
* Fix dependabot group by @​martincostello in
App-vNext/Polly#3047
* Pin runner images by @​martincostello in
App-vNext/Polly#3065
* Bump Refit to 10.2.0 by @​martincostello in
App-vNext/Polly#3096
* Disable Azure deployments by @​martincostello in
App-vNext/Polly#3105

## New Contributors

* @​alexravenna made their first contribution in
App-vNext/Polly#2984
* @​DaRosenberg made their first contribution in
App-vNext/Polly#3094

**Full Changelog**:
App-vNext/Polly@8.6.6...8.7.0


Commits viewable in [compare
view](App-vNext/Polly@8.6.6...8.7.0).
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