Upate some plugins (#887)

Signed-off-by: Vitaliy Gulyy <vgulyy@redhat.com>

generator/src/templates/theiaPlugins.json

@@ -5,8 +5,8 @@
     "vscode-builtin-configuration-editing": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/configuration-editing-1.39.1-prel.vsix",
     "vscode-builtin-cpp": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/cpp-1.39.1-prel.vsix",
     "vscode-builtin-csharp": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/csharp-1.39.1-prel.vsix",
-    "vscode-builtin-css": "https://open-vsx.org/api/vscode/css/1.44.2/file/vscode.css-1.44.2.vsix",
-    "vscode-builtin-css-language-features": "https://open-vsx.org/api/vscode/css-language-features/1.45.1/file/vscode.css-language-features-1.45.1.vsix",
+    "vscode-builtin-css": "https://open-vsx.org/api/vscode/css/1.50.1/file/vscode.css-1.50.1.vsix",
+    "vscode-builtin-css-language-features": "https://open-vsx.org/api/vscode/css-language-features/1.50.1/file/vscode.css-language-features-1.50.1.vsix",
     "vscode-builtin-debug-auto-launch": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/debug-auto-launch-1.39.1-prel.vsix",
     "vscode-builtin-docker": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/docker-1.39.1-prel.vsix",
     "vscode-builtin-fsharp": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/fsharp-1.39.1-prel.vsix",
@@ -16,14 +16,14 @@
     "vscode-builtin-gulp": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/gulp-1.39.1-prel.vsix",
     "vscode-builtin-handlebars": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/handlebars-1.39.1-prel.vsix",
     "vscode-builtin-hlsl": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/hlsl-1.39.1-prel.vsix",
-    "vscode-builtin-html": "https://open-vsx.org/api/vscode/html/1.48.0-next.4a1bcdafe9/file/vscode.html-1.48.0-next.4a1bcdafe9.vsix",
-    "vscode-builtin-html-language-features": "https://open-vsx.org/api/vscode/html-language-features/1.48.0-next.4a1bcdafe9/file/vscode.html-language-features-1.48.0-next.4a1bcdafe9.vsix",
+    "vscode-builtin-html": "https://open-vsx.org/api/vscode/html/1.50.1/file/vscode.html-1.50.1.vsix",
+    "vscode-builtin-html-language-features": "https://open-vsx.org/api/vscode/html-language-features/1.50.1/file/vscode.html-language-features-1.50.1.vsix",
     "vscode-builtin-ini": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/ini-1.39.1-prel.vsix",
     "vscode-builtin-jake": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/jake-1.39.1-prel.vsix",
     "vscode-builtin-java": "https://open-vsx.org/api/vscode/java/1.50.1/file/vscode.java-1.50.1.vsix",
     "vscode-builtin-javascript": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/javascript-1.39.1-prel.vsix",
-    "vscode-builtin-json": "https://open-vsx.org/api/vscode/json/1.46.1/file/vscode.json-1.46.1.vsix",
-    "vscode-builtin-json-language-features": "https://open-vsx.org/api/vscode/json-language-features/1.46.1/file/vscode.json-language-features-1.46.1.vsix",
+    "vscode-builtin-json": "https://open-vsx.org/api/vscode/json/1.50.1/file/vscode.json-1.50.1.vsix",
+    "vscode-builtin-json-language-features": "https://open-vsx.org/api/vscode/json-language-features/1.50.1/file/vscode.json-language-features-1.50.1.vsix",
     "vscode-builtin-less": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/less-1.39.1-prel.vsix",
     "vscode-builtin-log": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/log-1.39.1-prel.vsix",
     "vscode-builtin-lua": "https://github.com/theia-ide/vscode-builtin-extensions/releases/download/v1.39.1-prel/lua-1.39.1-prel.vsix",