Replacing require.nil in model package (#16953)

* Replacing require.nil in model package

* Fixing tests

* Update model/file_info_test.go

Co-authored-by: Doug Lauder <wiggin77@warpmail.net>

* Update model/file_info_test.go

Co-authored-by: Doug Lauder <wiggin77@warpmail.net>

Co-authored-by: Doug Lauder <wiggin77@warpmail.net>
Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

model/bundle_info_test.go

@@ -29,5 +29,5 @@ func TestBundleInfoForPath(t *testing.T) {
 	assert.Equal(t, info.Path, dir)
 	assert.NotNil(t, info.Manifest)
 	assert.Equal(t, info.ManifestPath, path)
-	assert.Nil(t, info.ManifestError)
+	assert.NoError(t, info.ManifestError)
 }