Update pixi (#19)

* Some updated from rerun_template

* Update pixi.lock

* smaller pixi.lock changes

* Update pixi on CI

* Update to pixi 0.42.1

Author: emilk

.github/workflows/cpp.yml

@@ -1,5 +1,10 @@
 # Copied from https://github.com/rerun-io/rerun_template
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+    types: [ opened, synchronize ]
 
 name: C++
 
@@ -10,9 +15,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: prefix-dev/[email protected].0
+      - uses: prefix-dev/[email protected].1
         with:
-          pixi-version: v0.26.1
+          pixi-version: v0.42.1
           cache: true
 
       - run: pixi run build

.github/workflows/links.yml

@@ -1,5 +1,10 @@
 # Copied from https://github.com/rerun-io/rerun_template
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - "main"
+  pull_request:
+    types: [ opened, synchronize ]
 
 name: Link checker