sample(05-sql-typeorm): update version typeorm

[Tony133]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Updated the 05-sql-typeorm example, following the new version of @nestjs/typeorm v8.1.0 which supports typeorm v0.3.x

Does this PR introduce a breaking change?

• Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build b536fb16-834f-4bd2-b532-d9ff0811b427

• 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 94.107%

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Totals
Change from base Build 6a42a282-8488-456e-9dd2-df532926a28e:	0.0%
Covered Lines:	5781
Relevant Lines:	6143

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💛 - Coveralls

[kamilmysliwiec]

lgtm