Update module github.com/lib/pq to v1.10.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/lib/pq	require	patch	v1.10.2 -> v1.10.3

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Release Notes

lib/pq

v1.10.3

Compare Source

• implement ConnPrepareContext/StmtQueryContext/StmtExecContext interfaces (context.Cancel() now ends connections)
• Avoid type assertion to the same type
• Fix build for illumos and solaris

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