update diesel to 2.1.0 and diesel-async to 0.3.0 (issue #2882) (#2895)

* update diesel to 2.1.0 and diesel-async to 0.3.0 (issue #2882)

* get rid of deprecated RawValue type alias usage, explicitly import diesel types instead of using wildcard import

* Update diesel-derive-enum and diesel-derive-newtype libraries

* Revert manual changes to schema.rs

* Update to newer diesel-cli image in CI, run fix-clippy before schema comparison, update schema to one generated with diesel-cli 2.1.0 and clippyfixed

* Remove wildcard import lint, fix diesel schema pipeline

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Co-authored-by: Dessalines <dessalines@users.noreply.github.com>