Update sqlx requirement from 0.4.2 to 0.5.1

[dependabot[bot]]

Updates the requirements on sqlx to permit the latest version.

Changelog

Sourced from sqlx's changelog.

0.5.1 - 2020-02-04

• Update sqlx-rt to 0.3.

0.5.0 - 2020-02-04

Changes

• [#983] [#1022] Upgrade async runtime dependencies [[@seryl], [@ant32], [@jplatte], [@robjtede]]

  • tokio 1.0
  • actix-rt 2.0

• [#854] Allow chaining map and try_map [[@jplatte]]

  Additionally enables calling these combinators with the macros:

  let ones: Vec<i32> = query!("SELECT 1 as foo")
      .map(|row| row.foo)
      .fetch_all(&mut conn).await?;
  

• [#940] Rename the #[sqlx(rename)] attribute used to specify the type name on the database side to #[sqlx(type_name)] [[@jplatte]].

• [#976] Rename the DbDone types to DbQueryResult. [[@jplatte]]

• [#976] Remove the Done trait. The .rows_affected() method is now available as an inherent method on PgQueryResult, MySqlQueryResult and so on. [[@jplatte]]

• [#1007] Remove any::AnyType (and replace with directly implementing Type<Any>) [[@jplatte]]

Added

• [#998] [#821] Add .constraint() to DatabaseError [[@fl9]]

• [#919] For SQLite, add support for unsigned integers [[@dignifiedquire]]

Fixes

• [#1002] For SQLite, GROUP BY in query! caused an infinite loop at compile time. [[@pymongo]]

• [#979] For MySQL, fix support for non-default authentication. [[@sile]]

• [#918] Recover from dropping wait_for_conn inside Pool. [[@antialize]]

#821: launchbadge/sqlx#821

#918: launchbadge/sqlx#918

... (truncated)

Commits

• cbe8207 release: 0.5.1
• efccd6c chore: update sqlx-rt to 0.3
• 7127357 release(sqlx-rt): 0.3
• 8da44b9 cli: update README
• d07ab85 chore: update lockfile
• 94d0bae release: 0.5
• 12246da chore: update CHANGELOG for 0.5
• 2fd26b5 sqlite: remove support for u64
• a23013e chore: update lockfile
• a7eeacb Rewrap lines in sqlx_macros::derives::{decode, encode}
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like sqlx is up-to-date now, so this is no longer needed.