Bump Microsoft.AspNetCore.SignalR.Protocols.MessagePack from 1.1.0 to 1.1.5 in /src/demo8

[dependabot[bot]]

Bumps Microsoft.AspNetCore.SignalR.Protocols.MessagePack from 1.1.0 to 1.1.5.

Commits

• 137349e Add SignalR to common repository list (#2205)
• 6195367 Update contributing information to be more chronological (#2197)
• 68e2369 Merge pull request #1998 from user1336/patch-1
• a3e745f Merge pull request #2150 from garora/patch-1
• b4a93ca Merge branch 'dev' into patch-1
• 3ae8820 Merge pull request #2137 from bbrandt/patch-1
• 6ac27ec Merge pull request #2047 from JamesNK/patch-1
• d80d138 Merge branch 'dev' into patch-1
• 8550a4d 'Stack Overflow' needs some space
• ceef2b9 Update README.md
• Additional commits viewable in compare view

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