Bump rp2040-pac to 0.6 in rtic-monotonics

[martinsp]

⚠️ examples/rp2040_local_i2c_init depends on unreleased rp-rs/rp-hal-boards#60

[korken89]

Thanks for the PR! Can you have a look at fixing the failing test?

[martinsp]

Looks like this needs to wait for rp-rs/rp-hal-boards#60 otherwise there are two versions of rp204-pac pulled in in the examples/rp2040_local_i2c_init and causes conflicting types.

• rp2040-pac 0.5 through rp-pico -> rp2040-hal (0.9.2)
• rp2040-pac 0.6 through rtic-monotonic

[korken89]

I gave this a look now, I think this is a breaking change no? As this would make the RP2040 monotonic stop working with the older PACs.
We've not set a policy yet on how we see breaking PAC changes, but lets add this to tomorrows meeting.
I'm fine with tracking the latest PACs as the contract of rtic-monotonics but lets see what others think.

Else one needs to add a feature flag for specific PAC version spans as breaking changes come.

[korken89]

Since we will do a major release this is now fine!