`panic` running `speakeasy openapi diff`

[rwjblue-glean]

When I run (from within a checkout of gleanwork/open-api):

speakeasy openapi diff --old=https://gleanwork.github.io/open-api/specs/source/client_rest.yaml --new=source/client_rest.yaml

I get the following error:

panic: send on closed channel

goroutine 1 [running]:
github.com/pb33f/openapi-changes/model.SendProgressUpdate(...)
        C:/Users/runneradmin/go/pkg/mod/github.com/pb33f/openapi-changes@v0.0.61/model/progress.go:26
github.com/speakeasy-api/speakeasy-core/changes.runLeftRightSummary({0x1081e1fe0, 0x14000453a40}, {0x140022bb450, 0x44}, {0x140016c7398, 0x17}, 0x1400241a1c0, 0x1400241a230, 0x1)
        C:/Users/runneradmin/go/pkg/mod/github.com/speakeasy-api/speakeasy-core@v0.19.8/changes/changes.go:166 +0x7b4
github.com/speakeasy-api/speakeasy-core/changes.GetChanges({0x1081e1fe0, 0x14000453a40}, {0x140016c9c20, 0x42}, {0x140016c7398, 0x17}, {0x0, 0x0, 0x0, 0x0, ...})
        C:/Users/runneradmin/go/pkg/mod/github.com/speakeasy-api/speakeasy-core@v0.19.8/changes/changes.go:74 +0x300
github.com/speakeasy-api/speakeasy/internal/changes.GetChanges({0x1081e1fe0?, 0x14000453a40?}, {0x140016c9c20?, 0x42?}, {0x140016c7398?, 0x17?})
        C:/a/speakeasy/speakeasy/internal/changes/openapiChanges.go:31 +0x44
github.com/speakeasy-api/speakeasy/cmd/openapi.diffOpenapiInteractive({0x1081e1fe0, 0x14000453a40}, {{0x140016c9c20, 0x42}, {0x140016c7398, 0x17}, {0x140010a4320, 0x7}, {0x1079bf468, 0x1}})
        C:/a/speakeasy/speakeasy/cmd/openapi/openapi.go:145 +0xe4
github.com/speakeasy-api/speakeasy/internal/model.ExecutableCommand[...].Init.func1.1()
        C:/a/speakeasy/speakeasy/internal/model/command.go:171 +0x84
github.com/speakeasy-api/speakeasy/internal/model.ExecutableCommand[...].Init.func1.2(0x107ba0f20?)
        C:/a/speakeasy/speakeasy/internal/model/command.go:178 +0x2c
github.com/speakeasy-api/speakeasy-core/events.Telemetry({0x1081e1fe0, 0x14000453050}, {0x10663482b, 0x8}, 0x14007207af8)
        C:/Users/runneradmin/go/pkg/mod/github.com/speakeasy-api/speakeasy-core@v0.19.8/events/capture.go:92 +0x328
github.com/speakeasy-api/speakeasy/internal/model.ExecutableCommand[...].Init.func1({0x106616cd1, 0x4?, 0x106616bdd?})
        C:/a/speakeasy/speakeasy/internal/model/command.go:177 +0x4c4
github.com/spf13/cobra.(*Command).execute(0x1400625d508, {0x140024e4a40, 0x2, 0x2})
        C:/Users/runneradmin/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1015 +0x828
github.com/spf13/cobra.(*Command).ExecuteC(0x10a566200)
        C:/Users/runneradmin/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1148 +0x350
github.com/spf13/cobra.(*Command).Execute(...)
        C:/Users/runneradmin/go/pkg/mod/github.com/spf13/cobra@v1.9.1/command.go:1071
github.com/speakeasy-api/speakeasy/cmd.Execute({0x1079b2928?, 0x15?}, {0x1079b2940?, 0x140000021c0?})
        C:/a/speakeasy/speakeasy/cmd/root.go:117 +0x38
main.main()
        C:/a/speakeasy/speakeasy/main.go:29 +0x130

---

I've confirmed that doing roughly the same thing directly with pb33f/openapi-changes works without error:

openapi-changes summary https://gleanwork.github.io/open-api/specs/source/client_rest.yaml source_specs/client_rest.yaml --markdown

GEN-1560 Bug: Reported bug about panic in speakeasy openapi diff