MAINT: Update pixi pin to v0.63.2

[VeckoTheGecko]

• xref Optimize CFMaskScale decoder. #11105 (comment)

cc @dcherian

[dcherian]

FWIW my pixi build fails locally with

pixi lock                                                                                                                                                    [opt-masking|…5⚑4]
⠒ fetching repodata    [━━━━━╾──────────────] @ 1.2 MiB/s
Error:   × could not initialize the build-backend
  ├─▶   × failed to solve the environment
  │
  ╰─▶ Cannot solve the request because of: The following packages are incompatible
      └─ pixi-build-python >=0.4.4 can be installed with any of the following options:
         └─ pixi-build-python 0.4.4 | 0.4.5 would require
            └─ pixi-build-api-version >=4,<5, which can be installed with any of the following options:
               └─ pixi-build-api-version 4
      ├─ the constraint pixi-build-api-version >=1,<4 cannot be fulfilled

[keewis]

this works for me. Can you make sure you have an up-to-date pixi? There were some breaking changes in newer pixi / pixi build backends, so maybe that's why

[dcherian]

Yes updating pixi worked!