I know few people that got jobs thanks to bootcamps.
How exactly dev skills would help you with starting a job? Do you want to code it yourself? Or do you want to know what if your devs go correct path?
You have to understand that development is a very wide term.
There is a frontend - UI + UX, both of them pretty complicated and it's only making designs a reality. Not really worth learning as a PM in my opinion. If you want to build a SaaS yourself, you would have to learn it, though. But as I said it's still a lot of work to learn it, just for programming UI+UX...
Then there is a backend. Lot's of different programming languages. Not only languages but also frameworks. This won't really help you with your current job.
But there is SQL and databases. In my opinion, this is worth something reading about and playing around. Why? Because sometimes very simple things are very complicated to implement due to database structure made by developers. Additionally, you can write your own SQL to query some data instead of asking devs to craft it for you.
I'd also look for books that are meant for PMs on this subject. I'm sure there are some, but I don't know them. I'd learn about general stuff. Why there is backend + frontend + devops. How do they connect with each other, etc? This would help you understand better dev teams dynamics. Also, it would allow you to avoid some traps when starting your own company. Like thinking about using SPA, when server side rendered is just enough.