disable parallel for TestEndpointSetUpdate_StrictEndpointMetadata

[yeya24]

• I added CHANGELOG entry for this change.
• Change is not relevant to the end user.

Changes

Running this test in parallel with other tests seem caused a data race. #7353 (comment)

==================
WARNING: DATA RACE
Write at 0x000002eddc60 by goroutine 33:
  github.com/thanos-io/thanos/pkg/query.TestEndpointSetUpdate_StrictEndpointMetadata()
      /home/runner/work/thanos/thanos/pkg/query/endpointset_test.go:470 +0x8a
  testing.tRunner()
      /opt/hostedtoolcache/go/1.23.4/x64/src/testing/testing.go:1690 +0x226
  testing.(*T).Run.gowrap1()
      /opt/hostedtoolcache/go/1.23.4/x64/src/testing/testing.go:1743 +0x44

Previous read at 0x000002eddc60 by goroutine 5016:
  github.com/thanos-io/thanos/pkg/info/infopb.(*StoreInfo).Size()
      /home/runner/work/thanos/thanos/pkg/info/infopb/rpc.pb.go:968 +0x4d
  github.com/thanos-io/thanos/pkg/info/infopb.(*InfoResponse).Size()
      /home/runner/work/thanos/thanos/pkg/info/infopb/rpc.pb.go:936 +0x138
  github.com/thanos-io/thanos/pkg/info/infopb.(*InfoResponse).Marshal()
      /home/runner/work/thanos/thanos/pkg/info/infopb/rpc.pb.go:549 +0x2e
  google.golang.org/protobuf/internal/impl.legacyMarshal()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/internal/impl/legacy_message.go:411 +0xf9
  google.golang.org/protobuf/proto.MarshalOptions.marshal()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/proto/encode.go:194 +0x504
  google.golang.org/protobuf/proto.Marshal()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/proto/encode.go:110 +0x52
  google.golang.org/grpc/encoding/proto.codec.Marshal()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/encoding/proto/proto.go:47 +0x55
  google.golang.org/grpc/encoding/proto.(*codec).Marshal()
      <autogenerated>:1 +0x53
  google.golang.org/grpc.encode()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/rpc_util.go:647 +0x6a
  google.golang.org/grpc.(*Server).sendResponse()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/server.go:1130 +0xc5
  google.golang.org/grpc.(*Server).processUnaryRPC()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/server.go:1416 +0x2092
  google.golang.org/grpc.(*Server).handleStream()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/server.go:1780 +0x1824
  google.golang.org/grpc.(*Server).serveStreams.func2.1()
      /home/runner/go/pkg/mod/google.golang.org/[email protected]/server.go:1019 +0x158

Verification