Make criterion a dev-dependency

[pitdicker]

No description provided.

[codecov]

Codecov Report

Merging #1245 (aadabc1) into 0.4.x (243d26d) will decrease coverage by 0.28%.
Report is 8 commits behind head on 0.4.x.
The diff coverage is n/a.

@@            Coverage Diff             @@
##            0.4.x    #1245      +/-   ##
==========================================
- Coverage   86.10%   85.82%   -0.28%     
==========================================
  Files          37       37              
  Lines       13522    13517       -5     
==========================================
- Hits        11643    11601      -42     
- Misses       1879     1916      +37     

see 5 files with indirect coverage changes

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[pitdicker]

Run cargo test --lib \
    Updating crates.io index
error: failed to select a version for the requirement `clap = "^4"`
candidate versions found which didn't match: 3.2.25, 3.2.24, 3.2.23, ...
location searched: crates.io index
required by package `criterion v0.5.1`
    ... which satisfies dependency `criterion = "^0.5.1"` of package `chrono v0.4.28 (/home/runner/work/chrono/chrono)`
Error: Process completed with exit code 101.

Same result as in #1104 (comment) when making criterion a dev-dependency 😞