Upgrade linguist dependency

This version changes how it counts python heredoc. All heredoc is
counted as code.

node_modules/github-linguist/jest.config.ts

@@ -0,0 +1,14 @@
+/*
+ * For a detailed explanation regarding each configuration property and type check, visit:
+ * https://jestjs.io/docs/configuration
+ */
+
+export default {
+  // Automatically clear mock calls and instances between every test
+  clearMocks: true,
+
+  // Indicates whether each individual test should be reported during the run
+  verbose: undefined,
+
+  preset: 'ts-jest',
+};