Fix builds for dotnet6 (#6595)

* Target net6.0

* Use new Enum.TryParse(ReadOnlySpan<char>) overload

* Replace RNGCryptoServiceProvider with RandomNumberGenerator

* ci - target net6.0 (#6594)

* Update deployment for dotnet6

* Use generic 6.0.x preview for CI

* Update direct dotnet download links

Co-authored-by: Bond_009 <bond.009@outlook.com>

.ci/azure-pipelines-abi.yml

@@ -7,7 +7,7 @@ parameters:
   default: "ubuntu-latest"
 - name: DotNetSdkVersion
   type: string
-  default: 6.0.100-rc.1.21458.32
+  default: 6.0.x
 
 jobs:
   - job: CompatibilityCheck
@@ -34,6 +34,7 @@ jobs:
         inputs:
           packageType: sdk
           version: ${{ parameters.DotNetSdkVersion }}
+          includePreviewVersions: true
 
       - task: DotNetCoreCLI@2
         displayName: 'Install ABI CompatibilityChecker Tool'

.ci/azure-pipelines-main.yml

@@ -1,7 +1,7 @@
 parameters:
   LinuxImage: 'ubuntu-latest'
   RestoreBuildProjects: 'Jellyfin.Server/Jellyfin.Server.csproj'
-  DotNetSdkVersion: 6.0.100-rc.1.21458.32
+  DotNetSdkVersion: 6.0.x
 
 jobs:
   - job: Build
@@ -54,6 +54,7 @@ jobs:
         inputs:
           packageType: sdk
           version: ${{ parameters.DotNetSdkVersion }}
+          includePreviewVersions: true
 
       - task: DotNetCoreCLI@2
         displayName: 'Publish Server'

.ci/azure-pipelines-package.yml

@@ -198,7 +198,8 @@ jobs:
     displayName: 'Use .NET 6.0 sdk'
     inputs:
       packageType: 'sdk'
-      version: '6.0.100-rc.1.21458.32'
+      version: '6.0.x'
+      includePreviewVersions: true
 
   - task: DotNetCoreCLI@2
     displayName: 'Build Stable Nuget packages'

.ci/azure-pipelines-test.yml

@@ -10,7 +10,7 @@ parameters:
   default: "tests/**/*Tests.csproj"
 - name: DotNetSdkVersion
   type: string
-  default: 6.0.100-rc.1.21458.32
+  default: 6.0.x
 
 jobs:
   - job: Test
@@ -41,6 +41,7 @@ jobs:
         inputs:
           packageType: sdk
           version: ${{ parameters.DotNetSdkVersion }}
+          includePreviewVersions: true
 
       - task: SonarCloudPrepare@1
         displayName: 'Prepare analysis on SonarCloud'