fix(spanner): resolve "want scalar type" error

[wyardley]

• Update spanner library to cloud.google.com/go/spanner@v1.9.0

This prevents erroring on DDL statements like:

ALTER TABLE users ALTER COLUMN created                                   
  SET OPTIONS (allow_commit_timestamp = true);                           

googleapis/google-cloud-go#2656

• Add test case which fails with older version of the library, and succeeds with this one.

Fixes: #426

[coveralls]

Pull Request Test Coverage Report for Build 838

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 53.29%

---

Totals
Change from base Build 835:	0.0%
Covered Lines:	2640
Relevant Lines:	4954

---

💛 - Coveralls

[wyardley]

also ran a go mod tidy based on feedback in other PRs, let me know if that doesn't look right.

[dhui]

Thanks for the PR, fix, and regression test!

Let's wait until there's an official release/tag. Also, don't forget to run go mod tidy.

[wyardley]

Yes, I did run a go mod tidy ☝️
FWIW, this does totally fix the issue w/ the newer version. I'll try to harass them to release a new one this coming week, because I'd like to be able to use this soon.

[wyardley]

@dhui: 1.9.0 is out now. Updated the PR as well as the commit message and PR bodies.

https://pkg.go.dev/cloud.google.com/go/spanner?tab=doc
also ran go mod tidy though doesn't seem to have pulled much out

[wyardley]

--- FAIL: Test (0.00s)
    --- FAIL: Test/mcr.microsoft.com/mssql/server:2019-latest (120.01s)
        dktest.go:36: Pulling image: mcr.microsoft.com/mssql/server:2019-latest
        dktest.go:54: Error parsing image pull response: context deadline exceeded
        dktest.go:186: Failed to run image: mcr.microsoft.com/mssql/server:2019-latest error: Error response from daemon: No such image: mcr.microsoft.com/mssql/server:2019-

This one seems to often be the cause of the flaky test in CI (in go 1.13) the couple of times I checked.

[dhui]

Waiting for tests to pass before merging