Update razor lang version to 7.0

src/Microsoft.AspNetCore.Razor.Language/src/RazorLanguageVersion.cs

@@ -26,7 +26,9 @@ public sealed class RazorLanguageVersion : IEquatable<RazorLanguageVersion>, ICo
 
     public static readonly RazorLanguageVersion Version_6_0 = new RazorLanguageVersion(6, 0);
 
-    public static readonly RazorLanguageVersion Latest = Version_6_0;
+    public static readonly RazorLanguageVersion Version_7_0 = new RazorLanguageVersion(7, 0);
+
+    public static readonly RazorLanguageVersion Latest = Version_7_0;
 
     public static readonly RazorLanguageVersion Experimental = new RazorLanguageVersion(1337, 1337);
 
@@ -47,6 +49,11 @@ public sealed class RazorLanguageVersion : IEquatable<RazorLanguageVersion>, ICo
             version = Experimental;
             return true;
         }
+        else if (languageVersion == "7.0")
+        {
+            version = Version_7_0;
+            return true;
+        }
         else if (languageVersion == "6.0")
         {
             version = Version_6_0;

src/Microsoft.AspNetCore.Razor.Language/test/RazorLanguageVersionTest.cs

@@ -123,6 +123,20 @@ public class RazorLanguageVersionTest
         Assert.Same(RazorLanguageVersion.Version_6_0, version);
     }
 
+    [Fact]
+    public void TryParse70()
+    {
+        // Arrange
+        var value = "7.0";
+
+        // Act
+        var result = RazorLanguageVersion.TryParse(value, out var version);
+
+        // Assert
+        Assert.True(result);
+        Assert.Same(RazorLanguageVersion.Version_7_0, version);
+    }
+
     [Fact]
     public void TryParseLatest()
     {
@@ -134,7 +148,7 @@ public class RazorLanguageVersionTest
 
         // Assert
         Assert.True(result);
-        Assert.Same(RazorLanguageVersion.Version_6_0, version);
+        Assert.Same(RazorLanguageVersion.Version_7_0, version);
     }
 
     [Fact]