undo the pin on the pixi version (#11334)

* Revert "work around a bug in pixi that disallows custom PyPI servers (#11331)"

This reverts commit f262748.

* exclude the broken version, anyways

Author: keewis

.github/workflows/ci-additional.yaml

@@ -52,8 +52,6 @@ jobs:
           persist-credentials: false
       - uses: Parcels-code/pixi-lock/create-and-cache@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
         id: pixi-lock
-        with:
-          pixi-version: v0.67.1
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: pixi-lock

.github/workflows/ci.yaml

@@ -46,16 +46,13 @@ jobs:
 
     outputs:
       cache-key: ${{ steps.pixi-lock.outputs.cache-key }}
-      pixi-version: ${{ steps.pixi-lock.outputs.pixi-version }}
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
       - uses: Parcels-code/pixi-lock/create-and-cache@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
         id: pixi-lock
-        with:
-          pixi-version: v0.67.1
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: pixi-lock

.github/workflows/hypothesis.yaml

@@ -59,8 +59,6 @@ jobs:
           persist-credentials: false
       - uses: Parcels-code/pixi-lock/create-and-cache@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
         id: pixi-lock
-        with:
-          pixi-version: v0.67.1
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: pixi-lock

.github/workflows/upstream-dev-ci.yaml

@@ -66,8 +66,6 @@ jobs:
           persist-credentials: false
       - uses: Parcels-code/pixi-lock/create-and-cache@38495788b79a5ff26009aecc15daa9a8310b8832 # v0.1.0
         id: pixi-lock
-        with:
-          pixi-version: v0.67.1
       - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: pixi-lock