Updates for Conda weekly CI (#3150)

* Update conda test for macos

* Disable path change

* Remove path

* Add conda path

* Simplification

* Automatic 'yes' for conda update

.github/workflows/conda.yml

@@ -12,23 +12,23 @@ on:
 
 jobs:
   conda-install:
-    name: Conda install and test
+    name: Install and test
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-13, macos-14]
+        os: [ubuntu-latest, macos-13, macos-14]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
 
     steps:
-      - name: Install conda (macos-13)
-        if: ${{ matrix.os == 'macos-13' }}
+      - name: Install conda (macOS)
+        if: runner.os == 'macOS'
         run: |
           brew install anaconda
-          echo "/usr/local/anaconda3/bin" >> $GITHUB_PATH
+          echo "/opt/homebrew/anaconda3/bin:/usr/local/anaconda3/bin" >> $GITHUB_PATH
       - name: Update conda
         run: |
-          conda update conda
+          conda -y update conda
 
       - name: Install DOLFINx (py3-10)
         run: |