fix(shipyard-controller): Allow parallel sequence execution if the service is different

[RealAnna]

backport of #7775

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[odubajDT]

lgtm, but let's wait for the unit tests :)

[codecov]

Codecov Report

Merging #7825 (ef5ce6a) into 0.15.x (9e0e7cf) will increase coverage by 0.01%.
The diff coverage is 92.85%.

@@            Coverage Diff             @@
##           0.15.x    #7825      +/-   ##
==========================================
+ Coverage   59.96%   59.97%   +0.01%     
==========================================
  Files         561      561              
  Lines       31980    31989       +9     
  Branches     1601     1601              
==========================================
+ Hits        19178    19187       +9     
  Misses      11495    11495              
  Partials     1307     1307              

Impacted Files	Coverage Δ
shipyard-controller/handler/eventdispatcher.go	58.02% <92.30%> (+2.18%)	⬆️
shipyard-controller/handler/sequencedispatcher.go	71.77% <100.00%> (+0.22%)	⬆️

Flag	Coverage Δ
shipyard-controller	60.92% <92.85%> (+0.05%)	⬆️

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