Regular Expression Denial of Service in trim

**Describe the bug**
`decap-cms-app` has a transitive depenency on `trim`, which currently has a security vulnerability for the pinned version.

https://github.com/advisories/GHSA-w5p7-h5w8-2hfq

**To Reproduce**

1. In a new directory `npm init -y && npm i decap-cms-app && npm audit`

npm audit logs

Alternatively:

1. Create a repo with `decap-cms-app` as a package.json dependency
2. Enable dependabot security updates
3. Witness dependabot security alert and inability to update

Logs from dependabot's attempt to update

**Expected behavior**
`decap-cms-app` not to have security vulnerabilities via transitive dependencies

**Applicable Versions:**
- Decap CMS version: 3.8.3