Git ignore package-lock.json and forcibly update in workflow

Author: amcasey

.github/workflows/update-package-lock.yaml

@@ -22,6 +22,6 @@ jobs:
         git config user.email "[email protected]"
         git config user.name "TypeScript Bot"
         npm install --package-lock-only
-        git add package-lock.json
+        git add -f package-lock.json
         git commit -m "Update package-lock.json"
         git push

.gitignore

@@ -84,6 +84,7 @@ tests/cases/user/*/**/*.d.ts
 tests/baselines/reference/dt
 .failed-tests
 TEST-results.xml
+package-lock.json
 tests/cases/user/TypeScript-React-Starter/TypeScript-React-Starter
 tests/cases/user/TypeScript-Node-Starter/TypeScript-Node-Starter
 tests/cases/user/TypeScript-React-Native-Starter/TypeScript-React-Native-Starter