Update `MultiPassWeld` schema

[vhirtham]

Changes

The weld_seam key is now required

Checks

• [ ] updated CHANGELOG.rst
• [ ] updated tests
• [ ] updated doc/
• [ ] update example/tutorial notebooks
• [ ] update manifest file

[github-actions[bot]]

Test Results

2 154 tests  ±0   2 154 :heavy_check_mark: ±0   2m 27s :stopwatch: -6s        1 suites ±0          0 :zzz: ±0         1 files   ±0          0 :x: ±0 

Results for commit d65b6dd5. ± Comparison against base commit 1ef73e54.

:recycle: This comment has been updated with latest results.

[codecov[bot]]

Codecov Report

Merging #790 (d65b6dd) into master (1ef73e5) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #790   +/-   ##
=======================================
  Coverage   96.87%   96.87%           
=======================================
  Files          88       88           
  Lines        6019     6019           
=======================================
  Hits         5831     5831           
  Misses        188      188           

Help us with your feedback. Take ten seconds to tell us how you rate us.

[vhirtham]

Okay... server error causes the doc failures. Let's retry on Monday