chore(deps): update module cloud.google.com/go/spanner to v1.86.0 (#1587)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[cloud.google.com/go/spanner](https://redirect.github.com/googleapis/google-cloud-go)
| `v1.85.1` -> `v1.86.0` |
[![age](https://developer.mend.io/api/mc/badges/age/go/cloud.google.com%2fgo%2fspanner/v1.86.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/go/cloud.google.com%2fgo%2fspanner/v1.85.1/v1.86.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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go.mod

@@ -11,7 +11,7 @@ require (
 	cloud.google.com/go/cloudsqlconn v1.18.1
 	cloud.google.com/go/dataplex v1.27.1
 	cloud.google.com/go/firestore v1.18.0
-	cloud.google.com/go/spanner v1.85.1
+	cloud.google.com/go/spanner v1.86.0
 	github.com/ClickHouse/clickhouse-go/v2 v2.40.3
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.53.0
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/trace v1.29.0