Swift: fix extractor tests pack

This allows `codeql query compile` to run on integration test queries.

codeql-workspace.yml

@@ -25,6 +25,7 @@ provide:
   - "misc/suite-helpers/qlpack.yml"
   - "ruby/extractor-pack/codeql-extractor.yml"
   - "swift/extractor-pack/codeql-extractor.yml"
+  - "swift/integration-tests/qlpack.yml"
   - "ql/extractor-pack/codeql-extractor.ym"
 
 versionPolicies:

swift/integration-tests/qlpack.yml

@@ -1,5 +1,6 @@
 name: integration-tests-swift
 version: 0.0.0
-extractor: swift
 dependencies:
-  codeql/swift-all: '*'
+  codeql/swift-all: ${workspace}
+tests: .
+extractor: swift