tests: don't depend on specific esbuild version for tests

[kapouer]

Hi,
884439b

shows that even esbuild patch releases can change the outcome of the file / directory names,
en/mybatch/chunk-TOZKWCDE.js becoming en/mybatch/chunk-MO3Q4WT6.js.

The tests shouldn't be pinned to such a specific esbuild behavior.

In particular, we see this in Debian, where an esbuild update makes hugo test suite fail.

Still, it's not a catastrophic nor urgent problem (in Debian we can just remove the assertions and be done with it).

[bep]

In particular, we see this in Debian, where an esbuild update makes hugo test suite fail.

You cannot use a random version of any Hugo dependency and expect the test suite to pass. A common way of testing found in Hugo's test suite is to take samples of the output. We do similar things with other libraries such as Goldmark and Chroma.

If you're saying that chunk-MO3Q4WT6.js is flaky across e.g. OS platforms, that's another story and needs a fix? But I would be surprised if that's the case.