fix: Failing generator-swiftserver integration tests for SDKGen service

[sandmman]

Fix for #544

Changes

• Handle Swift tools 4.0 package manifest format in server SDK zip file downloaded from SDKgen service
• Remove ObjectMapper from the module dependencies (it was hard-coded in the target dependencies)
• Update the mocked response content for server SDK tests to match the live service

Note In the readPackageDependencies method, we had a test to verify the package url from the sdkgen service matched our expectations (i.e. there was a minor version). Since we already had this logic, I added a similar regex expression. It is not strictly necessary, so we could remove it and its associated test case.

The regex looks for properly formatted package urls using the .upToNextMajor, .upToNextMinor, from: syntax ( does not support .branch). It also requires properly formatted version strings of a standard x.x.x format.

Exit Criteria

• generator-swiftserver unit and integration tests pass (npm run coverage)
• generator-swiftserver SDKgen compatibility test is working again (npm run testsdkgen)

[codecov-io]

Codecov Report

Merging #412 into develop will increase coverage by 0.64%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##           develop     #412      +/-   ##
===========================================
+ Coverage    89.96%   90.61%   +0.64%     
===========================================
  Files            9        9              
  Lines         1286     1278       -8     
===========================================
+ Hits          1157     1158       +1     
+ Misses         129      120       -9

Impacted Files	Coverage Δ
lib/sdkGenHelper.js	92.1% <100%> (+9.96%)	⬆️

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[tunniclm]

Just checked the package-lock.json and it contains invalid merge marks (I think!)

The file should be re-generated to fix.

[tunniclm]

Looks good, thanks