5m CI speedup per Test job: Stop manually installing VS Components

[Avasam]

I don't know when exactly this got fixed, it could be

• something just got changed in the GitHub runner;
• this change https://github.com/mhammond/pywin32/pull/2645/files#diff-0ba6c3a60c0d9ce9c43eb3c9c83acf4147c2382122ef18a17e8a418d88db502bR27 that @geppi originally suggested in COM Record field assignment using type information and multidim SAFEARRAYs as field values #2655 (comment)

This saves ~5m per job running COM tests

I also reduced timeout-minutes (with other previous CI improvements, I haven't seen a job go above 20 minutes) and used a YAML anchor to reduce repetition when updating timeout.

I think next time I speedup something in the CI I may reduce the timeout back to 20m. But I'm also working on getting adodbapi tests working, so we'll see.

[Avasam]

@mhammond quick win here with faster CI