Update comby/comby Docker tag to v0.18.4

[renovate]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
comby/comby	stage	patch	0.18.4	source
comby/comby	final	patch	0.18.4	source

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Release Notes

comby-tools/comby

v0.18.4

Compare Source

• Unbreaks a breaking change introduced in 0.18.0. It undos:
  • Simplify matching for :[hole]: If they are not inside nested delimiters, only match until it's suffix, or end of line (rather than end of file).
• The above behavior can be set with the flag -cut-off-newline

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[codecov]

Codecov Report

Merging #13809 into main will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main   #13809   +/-   ##
=======================================
  Coverage   52.07%   52.08%           
=======================================
  Files        1513     1513           
  Lines       84133    84133           
  Branches     7020     6979   -41     
=======================================
+ Hits        43810    43818    +8     
+ Misses      36708    36699    -9     
- Partials     3615     3616    +1     

Flag	Coverage Δ
#go	52.66% <ø> (+<0.01%)	⬆️
#integration	29.14% <ø> (+0.07%)	⬆️
#storybook	18.19% <ø> (ø)
#typescript	50.51% <ø> (+0.03%)	⬆️
#unit	33.94% <ø> (ø)

Impacted Files	Coverage Δ
.../internal/codeintel/resolvers/graphql/locations.go	85.45% <0.00%> (ø)
cmd/frontend/graphqlbackend/zoekt.go	77.40% <0.00%> (+0.25%)	⬆️
web/src/repo/RepoContainer.tsx	74.68% <0.00%> (+1.26%)	⬆️
web/src/repo/RepoRevisionContainer.tsx	64.51% <0.00%> (+6.45%)	⬆️
web/src/tree/TreeRoot.tsx	87.93% <0.00%> (+6.89%)	⬆️