Bump Avalonia and DialogHost.Avalonia #434

Job	Run time
snyk-check-code-linux	0s
build-windows / build	2m 30s
build-linux / build	42s
build-macos / build	48s
test-linux / test (GTiff2Tiles.Tests/GTiff2Tiles.Tests.csproj)	1m 14s
test-macos / test (GTiff2Tiles.Tests/GTiff2Tiles.Tests.csproj)	1m 11s
deploy-packages-github-linux	0s
deploy-docker-github-linux	0s
deploy-docker-docker-hub-linux	0s
deploy-binaries-linux	0s
deploy-packages-nuget-linux	0s
deploy-pages-linux	0s
deploy-src-linux	0s
snyk-check-docker-docker-hub-linux	0s
snyk-check-docker-github-linux	0s
deploy-binaries-macos	0s
test-windows / test (GTiff2Tiles.Tests/GTiff2Tiles.Tests.csproj)	3m 3s
deploy-binaries-windows	0s
	9m 28s

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