Combine multiple lines starting with same phrase into one

I'm writing a Bash script to convert Arch Linux packages into a format for a package manager I'm writing, and I have to convert some metadata files into file format .toml. Previously, I've been using sed, but I just need something I can implement into a Bash script. The conversion should look like shown below. Input:

... other stuff ...
depends = "some-dependency"
depends = "another-dependency"
depends = "yet-another-dependency"

Output:

... other stuff already converted ...
depends = [ "some-dependency", "another-dependency", "yet-another-dependency" ]