Remove PyData Sphinx Theme pin

[melissawm]

Includes fixes for the primary sidebar compatible with PST 0.15.3

[melissawm]

That did not fix the nav bar decoration 😢 I'll come back to this tomorrow.

[psobolewskiPhD]

I re-ran CI since 15.3 has been released.
Looking at the artifact:

• Horizontal scroll bar appears on TOC even when there's lots of room #80 appears fixed 🎉 -- err, maybe not, see below the ToC is missing.
• there is an annoying shift when mouse-over the top nav bar: when you mouse over the whole bar shifts up a few pixels
• the black highlight bar is in a different spot

- left-hand-size ToC is missing:

[melissawm]

Not sure what happened to the toc, but a lot has been merged in the past few days over at PST. For the other items - that's what I was trying to fix in my last commit. I'll take a look tomorrow.

[melissawm]

I think I got it, but we'll also need to update the docs, see napari/docs#423

[psobolewskiPhD]

The nav bar looks fixed!
You rock!

[melissawm]

With the latest commit to napari-docs this should be complete, including disabling the back-to-top button @jni

Let me know if you see any other glaring issues before we upgrade

[psobolewskiPhD]

I'd be ok with optimistically merging and releasing and then we see how it builds over there.
Worst case there is some glitch in dev docs?

[melissawm]

There shouldn't be, but I'll be available to fix this weekend if that happens.

[psobolewskiPhD]

I have the Pacific meeting with Juan (and hopefully others!) this evening, so I'll bring this up then and maybe we can get it merged and released.
If we're really concerned we could release without this (because a few small fixes were merged) and then merge and release this in it's own release?

[melissawm]

Thats up to you, I don't necessarily see an advantage in releasing without this PR

[jni]

That's what I think. 😜