fix: Change version assertion from string to number

Author: tkislan

src/notebooks/deepnote/deepnoteProjectUtils.unit.test.ts

@@ -40,7 +40,7 @@ project:
 
             const result = await readDeepnoteProjectFile(testUri);
 
-            assert.strictEqual(result.version, '1');
+            assert.strictEqual(result.version, 1);
             assert.strictEqual(result.project.id, 'test-project-id');
             assert.strictEqual(result.project.name, 'Test Project');
             assert.strictEqual(result.project.notebooks.length, 1);