Update RoslynCopilot url to 18.0.743-alpha (#8635)

Author: dibarbet

package.json

@@ -405,7 +405,7 @@
     {
       "id": "RoslynCopilot",
       "description": "Language server for Roslyn Copilot integration",
-      "url": "https://roslyn.blob.core.windows.net/releases/Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer-18.0.701-alpha.zip",
+      "url": "https://roslyn.blob.core.windows.net/releases/Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer-18.0.743-alpha.zip",
       "installPath": ".roslynCopilot",
       "platforms": [
         "neutral"
@@ -414,7 +414,7 @@
         "neutral"
       ],
       "installTestPath": "./.roslynCopilot/Microsoft.VisualStudio.Copilot.Roslyn.LanguageServer.dll",
-      "integrity": "4609A58D1BA337B4917391FFEF70FEF7DD04EF97F1B0A72B4F73114635A54918"
+      "integrity": "94F87755F5AA90B578E06A8C91DFAA0F99BBE58B147A53BA8C53CEFA07374583"
     },
     {
       "id": "Debugger",