Bump Avalonia and Avalonia.Themes.Fluent #1370

Job	Run time
snyk-check-code-linux	0s
build-linux / build	34s
build-macos / build	32s
build-windows / build	2m 22s
test-macos / test (Deploy.Tests/Deploy.Tests.csproj)	23s
test-macos / test (Deploy.Server.Tests/Deploy.Server.Tests.csproj)	23s
test-linux / test (Deploy.Tests/Deploy.Tests.csproj)	44s
test-linux / test (Deploy.Server.Tests/Deploy.Server.Tests.csproj)	32s
test-linux / codecov	0s
deploy-docker-docker-hub-linux	0s
deploy-docker-github-linux	0s
deploy-binaries-linux	0s
deploy-packages-github-linux	0s
deploy-packages-nuget-linux	0s
deploy-pages-linux	0s
deploy-src-linux	0s
snyk-check-docker-github-linux	0s
snyk-check-docker-docker-hub-linux	0s
test-macos / codecov	0s
deploy-binaries-macos	0s
test-windows / test (Deploy.Tests/Deploy.Tests.csproj)	2m 16s
test-windows / test (Deploy.Server.Tests/Deploy.Server.Tests.csproj)	2m 23s
test-windows / codecov	0s
deploy-binaries-windows	0s
	10m 9s

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