Add newlines with default logger (#580)

## Which problem is this PR solving?

The deauld logger is based on `fmt` and does not append new lines at the
end of the log which creates issues when Patron is not initialized e.g.
tests.

## Short description of the changes

- Use fmt.Println
- Introduced a function to append new lines char on formated lines

Upgrade packages (#579)

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## Which problem is this PR solving?

Upgrade all packages

## Short description of the changes

Upgrade all packages

Migrate to AWS SDK v2 (#551)

## Which problem is this PR solving?

Resolves #430.

## Short description of the changes

Update Golang AWS SDK to v2. This introduces breaking changes on the
`SQS` component and v2 of the `SNS` and `SQS` clients.

Examples have also been updated.

Useful material/documentation, regarding migrating from AWS v1 to v2:
* https://aws.github.io/aws-sdk-go-v2/docs/migrating/
* https://aws.github.io/aws-sdk-go-v2/docs/configuring-sdk/endpoints/
* https://aws.github.io/aws-sdk-go-v2/docs/unit-testing/
* https://aws.github.io/aws-sdk-go-v2/docs/making-requests/

Co-authored-by: Sotirios Mantziaris <[email protected]>

Feature: Add logfmt support to std logger (#550)

Removing content length from JSON helper (#546)

HTTP v2 JSON helper functions (#537)

Co-authored-by: Panayiotis Kritiotis <[email protected]>
Co-authored-by: Dionysis Xenos <[email protected]>

Add metrics to zerolog and std logger (#517)

Implement log level counter metrics (#514)

MongoDB Client Metrics Success Label Fix (#510)

Deterministic start with timestamp offset on rarely populated topic (#…

…508)

Co-authored-by: Sotirios Mantziaris <[email protected]>