Refactor CI to use micromamba instead of docker containers. (#123)

* Refactor CI to use micromamba instead of docker containers.

* Fix ruff warnings.

* Install jupyterlab.

* Use local conda lock file.

* Use trunk-minor as the default branch.

* Fix typo.

* Add hoomd build cache.

* Add fresnel.

* Determine hoomd hash correctly.

* Fix hoomd installation.

* Add signac.

* Skip CPPPotential examples.

* Add ipywidgets.

* Temporarily allow deprecation warnings.

* Fix failing test.

* No longer use CODEOWNERS.

.github/PULL_REQUEST_TEMPLATE.md

@@ -6,6 +6,6 @@
 Resolves: #???
 
 ## Checklist:
-- [ ] I have reviewed the [**Contributor Guidelines**](https://github.com/glotzerlab/hoomd-examples/blob/trunk/CONTRIBUTING.md).
-- [ ] I agree with the terms of the [**HOOMD-blue Contributor Agreement**](https://github.com/glotzerlab/hoomd-examples/blob/trunk/ContributorAgreement.md).
-- [ ] My name is on the [list of authors](https://github.com/glotzerlab/hoomd-examples/blob/trunk/AUTHORS.md).
+- [ ] I have reviewed the [**Contributor Guidelines**](https://github.com/glotzerlab/hoomd-examples/blob/trunk-minor/CONTRIBUTING.md).
+- [ ] I agree with the terms of the [**HOOMD-blue Contributor Agreement**](https://github.com/glotzerlab/hoomd-examples/blob/trunk-minor/ContributorAgreement.md).
+- [ ] My name is on the [list of authors](https://github.com/glotzerlab/hoomd-examples/blob/trunk-minor/AUTHORS.md).

.github/dependabot.yml

@@ -2,7 +2,7 @@ version: 2
 updates:
 - package-ecosystem: "github-actions"
   directory: "/"
-  target-branch: trunk
+  target-branch: trunk-minor
   schedule:
     interval: "monthly"
     time: "07:00"

.github/workflows/environments/environment.yaml

@@ -0,0 +1,23 @@
+channels:
+- conda-forge/label/numpy_rc
+- conda-forge
+dependencies:
+- cereal
+- cmake
+- eigen
+- freud
+- fresnel
+- gsd
+- h5py
+- ipywidgets
+- jupyterlab
+- ninja
+- numpy>=2.0.0rc1
+- matplotlib
+- mpi4py
+- openmpi
+- pillow
+- pybind11
+- python==3.12
+- signac
+- signac-flow