Allow empty dynaconfEnvName now that 'env' is supported

[bsquizz]

Related to #855 -- 'omitempty' should have been set on this field

[psav]

I don't mind the extra changes in this - but I'd like to check with you to ensure that you are running a newer version than I, then I can update!

[bsquizz]

I don't mind the extra changes in this - but I'd like to check with you to ensure that you are running a newer version than I, then I can update!

I was wondering about this too because I just re-fetched the doc tools yesterday. I'm wondering if we should pin these in the doc generation scripts so everyone has consistency when they run make api-docs (that can be a follow-up PR). Here's what I have now:

❯ cd crd-ref-docs
❯ git rev-parse HEAD
365ecbe3898eee7d95858dba7e13d4903d2faefb

❯ asciidoctor -v
Asciidoctor 2.0.20 [https://asciidoctor.org]
Runtime Environment (ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]) (lc:UTF-8 fs:UTF-8 in:UTF-8 ex:UTF-8)

❯ docs/build/node_modules/.bin/jsonschema2md --version
4.2.2

Let me know if you're using something different and I bump down to a lower version