update expected output of diagnostics test

Author: erik-krogh

javascript/ql/integration-tests/all-platforms/diagnostics/syntax-error/diagnostics.expected

@@ -1,9 +1,9 @@
 {
   "location": {
-    "endColumn": 4,
+    "endColumn": 5,
     "endLine": 1,
     "file": "bad.js",
-    "startColumn": 4,
+    "startColumn": 5,
     "startLine": 1
   },
   "markdownMessage": "A parse error occurred: `Unexpected token`. Check the syntax of the file. If the file is invalid, correct the error or [exclude](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/customizing-code-scanning) the file from analysis.",