test(swiftpm): Avoid a hard-coded path in test results

Also fix the `REPLACE_ABSOLUTE_DEFINITION_FILE_PATH` placeholder to be
invariant, just like `REPLACE_DEFINITION_FILE_PATH` is.

Signed-off-by: Sebastian Schuberth <sebastian@doubleopen.org>

plugins/package-managers/swiftpm/src/funTest/assets/projects/synthetic/expected-output-lockfile-v3.yml

@@ -19,6 +19,6 @@ packages: []
 issues:
 - timestamp: "1970-01-01T00:00:00Z"
   source: "SwiftPM"
-  message: "Could not parse lockfile '/workspace/plugins/package-managers/swiftpm/src/funTest/assets/projects/synthetic/lockfile-v3/Package.resolved'.\
+  message: "Could not parse lockfile '<REPLACE_ABSOLUTE_DEFINITION_FILE_PATH>'.\
     \ Unknown file format version '3'."
   severity: "ERROR"

utils/test/src/main/kotlin/Utils.kt

@@ -102,7 +102,7 @@ fun patchExpectedResult(
             val path = vcsDir.getPathToRoot(projectDir)
 
             put("<REPLACE_DEFINITION_FILE_PATH>", "$path/${definitionFile.name}")
-            put("<REPLACE_ABSOLUTE_DEFINITION_FILE_PATH>", definitionFile.absolutePath)
+            put("<REPLACE_ABSOLUTE_DEFINITION_FILE_PATH>", definitionFile.absoluteFile.invariantSeparatorsPath)
             put("<REPLACE_URL>", url)
             put("<REPLACE_REVISION>", vcsDir.getRevision())
             put("<REPLACE_PATH>", path)