[chore] update go-ffmpreg to v0.2.3

[NyaaaWhatsUpDoc]

Description

Updates go-ffmpreg: https://codeberg.org/gruf/go-ffmpreg/releases/tag/v0.2.3

Checklist

• I/we have read the GoToSocial contribution guidelines.
• I/we have discussed the proposed changes already, either in an issue on the repository, or in the Matrix chat.
• I/we have not leveraged AI to create the proposed changes.
• I/we have performed a self-review of added code.
• I/we have written code that is legible and maintainable by others.
• I/we have commented the added code, particularly in hard-to-understand areas.
• I/we have made any necessary changes to documentation.
• I/we have added tests that cover new code.
• I/we have run tests and they pass locally with the changes.
• I/we have run go fmt ./... and golangci-lint run.

[tsmethurst]

Nice one :) Any interesting changes to know about?

[NyaaaWhatsUpDoc]

no changes to ffmpeg at all, just the underlying build tools were updated. i had a look at their change logs and couldn't see anything particularly exciting. though the build now seems to have stripped some further unused functions, which mean the odd function tempnam was no longer required to be defined and exported in the WASM runtime which is nice :)

[NyaaaWhatsUpDoc]

also a whopping 200KB in binary size reduction 👩‍🍳 👌