test: run downloaded OATS from PATH

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: zeitlinger

mise.toml

@@ -99,7 +99,7 @@ run = """
 OATS_VERSION="v0.7.1-0.20260722080634-db417e9ee743"
 GOPROXY=direct GONOSUMDB=github.com/grafana/oats \
   go install "github.com/grafana/oats@${OATS_VERSION}"
-"$(go env GOPATH)/bin/oats" \
+oats \
   --config oats-config.yaml \
   --no-cache \
   --timeout=5m