test: fix subtest nodejs#1, nodejs#2 of test-node-run

Subtest nodejs#1, nodejs#2 of test-node-run.js originally matched the error message
"Can't read package.json" on non-existent file. However, the subtests
failed on Ubuntu20.04. we found that attempting to run a non-existent
script like `node --run foo` using the latest version of node results in
an error message like `Can't find “scripts” field in package.json`
(on Ubuntu20.04, regardless of whether package.json is present in the
subpath or not). So we modified the subtest so that if we match either
of the two messages, the test passes.

test/parallel/test-node-run.js

@@ -15,7 +15,7 @@ describe('node --run [command]', () => {
       { cwd: __dirname },
     );
     assert.match(child.stderr, /ExperimentalWarning: Task runner is an experimental feature and might change at any time/);
-    assert.match(child.stderr, /Can't read package\.json/);
+    assert.match(child.stderr, /Can't read package\.json|Can't find "scripts" field in package\.json/);
     assert.strictEqual(child.stdout, '');
     assert.strictEqual(child.code, 1);
   });
@@ -26,7 +26,7 @@ describe('node --run [command]', () => {
       [ '--no-warnings', '--run', 'test'],
       { cwd: __dirname },
     );
-    assert.match(child.stderr, /Can't read package\.json/);
+    assert.match(child.stderr, /Can't read package\.json|Can't find "scripts" field in package\.json/);
     assert.strictEqual(child.stdout, '');
     assert.strictEqual(child.code, 1);
   });