Bump Microsoft.Extensions.Http.Polly from 6.0.7 to 6.0.8

[dependabot[bot]]

Bumps Microsoft.Extensions.Http.Polly from 6.0.7 to 6.0.8.

Release notes

Sourced from Microsoft.Extensions.Http.Polly's releases.

.NET 6.0.8

Release

Commits

• 6a01dd1 Merged PR 24140: [internal/release/6.0] Update dependencies from dnceng/inter...
• ae88823 [internal/release/6.0] Update dependencies from dnceng/internal/dotnet-runtime
• be406b4 [internal/release/6.0] Update dependencies from dnceng/internal/dotnet-efcore...
• 7ba18ae Merge in 'release/6.0' changes
• ec68a6b Merge pull request #42694 from wtgodbe/internal-merge-6.0-2022-07-12-1057
• 12708ca Update SDK, Baseline, SiteExtension
• 466eecb Merge commit '773e8cc3fbdc2c4ffbd57c1f53f21649ef94c35c' into internal-merge-6...
• 4361e98 [internal/release/6.0] Update dependencies from dnceng/internal/dotnet-runtime
• 44b094b Merge in 'release/6.0' changes
• 764a0f9 Fix newtonsoft alerts (#42478)
• Additional commits viewable in compare view

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