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>

deployment/build.fedora.amd64

@@ -8,6 +8,16 @@ set -o xtrace
 # Move to source directory
 pushd ${SOURCE_DIR}
 
+if [[ ${IS_DOCKER} == YES ]]; then
+    # Remove BuildRequires for dotnet-sdk-6.0, since it's installed manually
+    pushd fedora
+
+    cp -a jellyfin.spec /tmp/spec.orig
+    sed -i 's/BuildRequires:  dotnet/# BuildRequires:  dotnet/' jellyfin.spec
+
+    popd
+fi
+
 # Modify changelog to unstable configuration if IS_UNSTABLE
 if [[ ${IS_UNSTABLE} == 'yes' ]]; then
     pushd fedora
@@ -37,4 +47,13 @@ fi
 
 rm -f fedora/jellyfin*.tar.gz
 
+if [[ ${IS_DOCKER} == YES ]]; then
+    pushd fedora
+
+    cp -a /tmp/spec.orig jellyfin.spec
+    chown -Rc $(stat -c %u:%g ${ARTIFACT_DIR}) ${ARTIFACT_DIR}
+    
+    popd
+fi
+
 popd