ci: increase conformance test timeout from 30m to 60m

The 10 CRUD+discovery tests against real AWS APIs need more time.
Matches the CI job's timeout-minutes: 60 setting.

Author: JeroenSoeters

scripts/run-conformance-tests.sh

@@ -159,4 +159,4 @@ echo "PKL dependencies resolved successfully"
 echo ""
 echo "Running conformance tests..."
 cd "${PROJECT_ROOT}"
-go test -tags=conformance -v -timeout 30m ./...
+go test -tags=conformance -v -timeout 60m ./...