⬆️ Bump anaconda from 2025.06 to 2025.12 (#153)

* ⬆️ Bump anaconda from 2025.06 to 2025.12

Bumps anaconda from 2025.06 to 2025.12.

---
updated-dependencies:
- dependency-name: anaconda
  dependency-version: '2025.12'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

* Add execution statistics status page

- Add status.md with execution statistics table
- Include Python version and package list information
- Excludes GPU stats (not used in CI)
- Excludes JAX backend check (not used in project)
- Add status page to _toc.yml before references

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matt McKay <[email protected]>

Author: dependabot[bot]

environment.yml

@@ -3,7 +3,7 @@ channels:
   - default
 dependencies:
   - python=3.13
-  - anaconda=2025.06
+  - anaconda=2025.12
   - pip
   - pip:
     - jupyter-book==1.0.4post1

lectures/_toc.yml

@@ -11,4 +11,5 @@ chapters:
   - file: generators
   - file: uc_mc_semigroups
   - file: ergodicity
+  - file: status
   - file: zreferences

lectures/status.md

@@ -0,0 +1,34 @@
+---
+jupytext:
+  text_representation:
+    extension: .md
+    format_name: myst
+kernelspec:
+  display_name: Python 3
+  language: python
+  name: python3
+---
+
+# Execution Statistics
+
+This table contains the latest execution statistics.
+
+```{nb-exec-table}
+```
+
+(status:machine-details)=
+
+These lectures are built on `linux` instances through `github actions`. 
+
+These lectures are using the following python version
+
+```{code-cell} ipython
+!python --version
+```
+
+and the following package versions
+
+```{code-cell} ipython
+:tags: [hide-output]
+!conda list
+```