Allocate more memory for link_extension step

[bwoebi]

Root cause of #2865 - using a large instead of a medium circleci instance.

And changing the build step so that it will properly fail now if any command fails.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.40%. Comparing base (f4b4015) to head (61f99d4).

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2866      +/-   ##
============================================
- Coverage     78.41%   78.40%   -0.02%     
  Complexity     2526     2526              
============================================
  Files           173      173              
  Lines         18713    18713              
  Branches        976      976              
============================================
- Hits          14673    14671       -2     
- Misses         3503     3505       +2     
  Partials        537      537              

Flag	Coverage Δ
appsec-extension	69.08% <ø> (ø)
tracer-extension	78.26% <ø> (ø)
tracer-php	82.08% <ø> (-0.02%)	⬇️

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

see 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f4b4015...61f99d4. Read the comment docs.

[morrisonlevi]

Surprising that this got through somehow. I think maybe we should do a little more to ensure the artifacts are installable, but I object to nothing in this PR, so approved.

[bwoebi]

@morrisonlevi It looks like it just affected a single version on a single target. But yes :-X