Bump Polly from 8.6.1 to 8.6.3 (#190)

Updated [Polly](https://github.com/App-vNext/Polly) from 8.6.1 to 8.6.3.

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

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

## 8.6.3

## What's Changed

* Add release notes configuration by @​martincostello in
App-vNext/Polly#2678
* Simplify release workflow by @​martincostello in
App-vNext/Polly#2679
* Sign-off commits by @​martincostello in
App-vNext/Polly#2694
* Add GitHub sponsorship by @​martincostello in
App-vNext/Polly#2695
* Refactor project dependencies by @​martincostello in
App-vNext/Polly#2696
* Add zizmor by @​martincostello in
App-vNext/Polly#2698
* Update benchmarks by @​martincostello in
App-vNext/Polly#2712
* Reduce async overhead by @​pentp in
App-vNext/Polly#2664
* Update benchmarks by @​martincostello in
App-vNext/Polly#2713

## New Contributors

* @​pentp made their first contribution in
App-vNext/Polly#2664

**Full Changelog**:
App-vNext/Polly@8.6.2...8.6.3


## 8.6.2

## What's Changed

* Performance tweaks by @​martincostello in
App-vNext/Polly#2667
* Update dependencies by @​martincostello in
App-vNext/Polly#2668
* Update benchmark results by @​martincostello in
App-vNext/Polly#2669

## New Contributors

* @​pentp made their first contribution in
App-vNext/Polly#2667

**Full Changelog**:
App-vNext/Polly@8.6.1...8.6.2


Commits viewable in [compare
view](App-vNext/Polly@8.6.1...8.6.3).
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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -9,7 +9,7 @@
     <PackageVersion Include="LibGit2Sharp" Version="0.31.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
-    <PackageVersion Include="Polly" Version="8.6.1" />
+    <PackageVersion Include="Polly" Version="8.6.3" />
 	<PackageVersion Include="System.CommandLine" Version="2.0.0-beta7.25353.2" />
     <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.1" />