resolve a sync request for projects using the shared xml backend

[hahn-kev]

Fixes sillsdev/LfMerge#317

Description

projects previously couldn't sync when they were using the shared xml backend, this updates the lfmerge version to resolve that issue

Checklist

• I have labeled my PR with: bug, feature, engineering, security fix or testing
• I have performed a self-review of my own code
• I have reviewed the title & description of this PR which I will use as the squashed PR commit message
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• I have enabled auto-merge (optional)

Testing

Remove a project on hold for a sync failure with a not supported exception

[github-actions]

Unit Test Results

362 tests   362 ✔️  21s ⏱️
  37 suites      0 💤
    1 files        0 ❌

Results for commit 7949945.