Replace deprecated properties and functions in Process

[417-72KI]

In linux (Docker image), building Danger-Swift has some warnings.

Building for debugging...
/work/Sources/Runner/Commands/Edit.swift:20:9: warning: immutable value 'absoluteLibPath' was never used; consider removing it
    let absoluteLibPath: String
        ^
/work/Sources/Runner/Commands/Edit.swift:21:9: warning: immutable value 'libsImport' was never used; consider removing it
    let libsImport: [String]
        ^
/work/Sources/Runner/Commands/Runner.swift:155:10: warning: 'launchPath' is deprecated: renamed to 'executableURL'
    proc.launchPath = swiftC
         ^
/work/Sources/Runner/Commands/Runner.swift:155:10: note: use 'executableURL' instead
    proc.launchPath = swiftC
         ^~~~~~~~~~
         executableURL
/work/Sources/Runner/Commands/Runner.swift:162:14: warning: 'currentDirectoryPath' is deprecated: renamed to 'currentDirectoryURL'
        proc.currentDirectoryPath = directoryURL.absoluteString
             ^
/work/Sources/Runner/Commands/Runner.swift:162:14: note: use 'currentDirectoryURL' instead
        proc.currentDirectoryPath = directoryURL.absoluteString
             ^~~~~~~~~~~~~~~~~~~~
             currentDirectoryURL
/work/Sources/Runner/Commands/Runner.swift:167:10: warning: 'launch()' is deprecated: renamed to 'run'
    proc.launch()
         ^
/work/Sources/Runner/Commands/Runner.swift:167:10: note: use 'run' instead
    proc.launch()
         ^~~~~~
         run
/work/Sources/Runner/Commands/RunDangerJS.swift:25:10: warning: 'launchPath' is deprecated: renamed to 'executableURL'
    proc.launchPath = dangerJS
         ^
/work/Sources/Runner/Commands/RunDangerJS.swift:25:10: note: use 'executableURL' instead
    proc.launchPath = dangerJS
         ^~~~~~~~~~
         executableURL

This PR fixes ones that saids '~' is deprecated.

[f-meloni]

Amazing! Thank you :)