Bump cloud.google.com/go/spanner from 1.86.0 to 1.86.1 in /sdks#36645

lostluck merged 1 commit intomasterapache/beam:masterfrom

dependabot/go_modules/sdks/cloud.google.com/go/spanner-1.86.1apache/beam:dependabot/go_modules/sdks/cloud.google.com/go/spanner-1.86.1Copy head branch name to clipboard