ci: modernize and remove rc conda channel (#964)

Author: henryiii

.github/workflows/action.yml

@@ -28,15 +28,17 @@ jobs:
           - ubuntu-24.04-arm
           - windows-2019
           - windows-2022
+          - windows-2025
           - macos-13
           - macos-14
+          - macos-15
     steps:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
       - uses: astral-sh/setup-uv@v6
       - uses: ./
-      - run: nox --non-interactive --error-on-missing-interpreter --session github_actions_default_tests
+      - run: nox --session github_actions_default_tests
 
   action-all-tests:
     runs-on: windows-latest
@@ -49,5 +51,5 @@ jobs:
           python-version: 3.9
       - uses: ./
         with:
-          python-versions: "3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, pypy-2.7, pypy-3.7, pypy-3.8, pypy-3.9, pypy-3.10"
-      - run: nox --non-interactive --error-on-missing-interpreter --session github_actions_all_tests
+          python-versions: "3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, pypy-2.7, pypy-3.7, pypy-3.8, pypy-3.9, pypy-3.10, pypy-3.11"
+      - run: nox --session github_actions_all_tests

.github/workflows/ci.yml

@@ -57,15 +57,14 @@ jobs:
           auto-update-conda: true
           python-version: ${{ matrix.python-version }}
           use-mamba: true
-          channels: conda-forge/label/python_rc,conda-forge
+          channels: conda-forge
       - name: Install Nox-under-test (uv)
         run:  uv pip install --system .
       - name: Run tests on ${{ matrix.os }}
-        run: nox --non-interactive --error-on-missing-interpreter --session "tests-${{ matrix.python-version }}" -- --full-trace
-
+        run: nox --session "tests-${{ matrix.python-version }}" -- --full-trace
       - name: Run Conda tests
         if: matrix.python-version == '3.12'
-        run: nox --non-interactive --error-on-missing-interpreter --session "conda_tests" -- --full-trace
+        run: nox --session "conda_tests" -- --full-trace
       - name: Save coverage report
         uses: actions/upload-artifact@v4
         with:
@@ -97,7 +96,7 @@ jobs:
       - name: Display structure of downloaded files
         run: ls -aR
       - name: Run coverage
-        run: nox --non-interactive --session "cover"
+        run: nox --session "cover"
 
   lint:
     runs-on: ubuntu-latest
@@ -112,7 +111,7 @@ jobs:
       - name: Install Nox-under-test
         run: python -m pip install --disable-pip-version-check .
       - name: Lint
-        run: nox --non-interactive --error-on-missing-interpreter --session "lint"
+        run: nox --session "lint"
 
   docs:
     runs-on: ubuntu-latest
@@ -129,4 +128,4 @@ jobs:
       - name: Install Nox-under-test
         run:  uv pip install --system .
       - name: Docs
-        run: nox --non-interactive --error-on-missing-interpreter --session "docs"
+        run: nox --session "docs"