docs(spm): Improve the KDoc for resolveLibraryDependencies()

Swift Package Manager definition files may be used for both,
applications and libraries. So, remove the misleading bits of the
comment in that regard.

Furthermore, it's not true that this function should only be used when
`allowDynamicVersions` is set, because `Package.swift` may have a
sibling lockfile which pins the versions. So, remove that part of the
comment.

Note that `Spm.kt` should be improved to only analyze the lockfiles
directly in case there is no sibling `Package.swift` file.

Signed-off-by: Frank Viernau <frank_viernau@epam.com>

plugins/package-managers/spm/src/main/kotlin/Spm.kt

@@ -104,11 +104,9 @@ class Spm(
     }
 
     /**
-     * Resolves dependencies when the final build target is a library and Package.swift is available.
+     * Resolves dependencies of a `Package.swift` file.
      * This method parses dependencies from `swift package show-dependencies --format json` output.
      * Also, this method provides parent-child associations for parsed dependencies.
-     *
-     * Only used when analyzerConfig.allowDynamicVersions is set to true.
      */
     private fun resolveLibraryDependencies(definitionFile: File): List<ProjectAnalyzerResult> {
         val project = projectFromDefinitionFile(definitionFile)