fix(notify): don't login to matrix to verify (could rate-limit fail)

[JosephKav]

.Locate logs in on Matrix types. Skip the Locate for them to help against login rate-limiting

2023/01/11 20:25:15 DEBUG: 1/109 org/repo1 Init
2023/01/11 20:25:15 DEBUG: 2/109 org/repo2 Init
2023/01/11 20:25:15 DEBUG: 3/109 org/repo3 Init
2023/01/11 20:25:15 DEBUG: 4/109 org/repo4 Init
2023/01/11 20:25:15 DEBUG: 5/109 org/repo5 Init
...
  org/repo1:
    notify:
      matrix:
        ^ failed to log in: Too Many Requests
  org/repo2:
    notify:
      matrix:
        ^ failed to log in: Too Many Requests
  org/repo3:
    notify:
      matrix:
        ^ failed to log in: Too Many Requests
  org/repo4:
    notify:
      matrix:
        ^ failed to log in: Too Many Requests
  org/repo5:
    notify:
      matrix:
        ^ failed to log in: Too Many Requests

[codecov]

Codecov Report

Merging #198 (a7ece13) into master (81a2a72) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #198      +/-   ##
==========================================
+ Coverage   97.67%   97.67%   +0.01%     
==========================================
  Files          63       63              
  Lines        5307     5309       +2     
==========================================
+ Hits         5183     5185       +2     
  Misses         89       89              
  Partials       35       35              

Impacted Files	Coverage Δ
notifiers/shoutrrr/verify.go	100.00% <100.00%> (ø)

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