Bump timeout when waiting for crates.io publish (#4213)

## Motivation and Context
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<!--- If it fixes an open issue, please link to the issue here -->
We have occasionally seen errors when crates.io takes longer than 10
seconds to show our crates as published. This change relaxes that
timeout to 60 seconds.

## Description
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## Testing
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to -->
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## Checklist
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rather than leaving it unchecked -->
- [ ] For changes to the smithy-rs codegen or runtime crates, I have
created a changelog entry Markdown file in the `.changelog` directory,
specifying "client," "server," or both in the `applies_to` key.
- [ ] For changes to the AWS SDK, generated SDK code, or SDK runtime
crates, I have created a changelog entry Markdown file in the
`.changelog` directory, specifying "aws-sdk-rust" in the `applies_to`
key.

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