docs: Bump version: 0.7.3 → 0.7.4

[matthewfeickert]

Description

Forward port the version bump information from release v0.7.4 on the release/v0.7.x branch.

Checklist Before Requesting Reviewer

• Tests are passing
• "WIP" removed from the title of the pull request
• Selected an Assignee for the PR to be responsible for the log summary

Before Merging

For the PR Assignees:

• Summarize commit messages into a comprehensive review of the PR

* Forward port the version bump information from release v0.7.4 on the
  release/v0.7.x branch.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +1.78% 🎉

Comparison is base (49278c8) 96.49% compared to head (5673dcc) 98.28%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2331      +/-   ##
==========================================
+ Coverage   96.49%   98.28%   +1.78%     
==========================================
  Files          69       69              
  Lines        4538     4538              
  Branches      803      803              
==========================================
+ Hits         4379     4460      +81     
+ Misses        123       45      -78     
+ Partials       36       33       -3     

Flag	Coverage Δ
contrib	97.86% <ø> (?)
doctest	60.99% <ø> (?)
unittests-3.10	96.29% <ø> (?)
unittests-3.11	96.29% <ø> (ø)
unittests-3.8	96.31% <ø> (ø)
unittests-3.9	96.34% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
src/pyhf/utils.py	95.91% <ø> (ø)

... and 6 files with indirect coverage changes

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