Release v1.4.0

[stdevMac]

Release for v1.4.0.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 34.05714% with 577 lines in your changes missing coverage. Please review.

Project coverage is 76.93%. Comparing base (51fb724) to head (122dbc8).

Files	Patch %	Lines
...acts/mevboostrelaylist/MEVBoostRelayAllowedList.go	0.00%	550 Missing :warning:
cli/keys.go	48.27%	9 Missing and 6 partials :warning:
internal/pkg/keystores/keystore_external_utils.go	66.66%	4 Missing and 1 partial :warning:
cli/cli.go	89.18%	2 Missing and 2 partials :warning:
internal/pkg/keystores/validate.go	88.23%	1 Missing and 1 partial :warning:
...nal/lido/contracts/mevboostrelaylist/get_relays.go	98.21%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #394 +/- ## ========================================== - Coverage 86.59% 76.93% -9.66% ========================================== Files 78 86 +8 Lines 3977 4809 +832 ========================================== + Hits 3444 3700 +256 - Misses 448 1015 +567 - Partials 85 94 +9 ``` | [Flag](https://app.codecov.io/gh/NethermindEth/sedge/pull/394/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NethermindEth) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/NethermindEth/sedge/pull/394/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NethermindEth) | `76.93% <34.05%> (-9.66%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NethermindEth#carryforward-flags-in-the-pull-request-comment) to find out more.

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