CompatHelper: bump compat for "DataStructures" to "0.18"

[github-actions[bot]]

This pull request changes the compat entry for the DataStructures package from 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17 to 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18.

This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov-commenter]

Codecov Report

Merging #403 into master will decrease coverage by 0.12%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #403      +/-   ##
==========================================
- Coverage   44.24%   44.11%   -0.13%     
==========================================
  Files          18       18              
  Lines        3390     3384       -6     
==========================================
- Hits         1500     1493       -7     
- Misses       1890     1891       +1     

Impacted Files	Coverage Δ
src/form.jl	52.19% <0.00%> (-1.12%)	:arrow_down:
src/Compose.jl	30.58% <0.00%> (-0.81%)	:arrow_down:
src/misc.jl	56.98% <0.00%> (-0.62%)	:arrow_down:

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[ChrisRackauckas]

Bump and tag please. This is causing downstream test failures. https://github.com/SciML/DiffEqProblemLibrary.jl/pull/67

[ChrisRackauckas]

And a tag please?

[bjarthur]

https://github.com/JuliaRegistries/General/pull/20935