[REFACTOR] Centralize handling of Python version

.github/workflows/deploy.yml

@@ -14,10 +14,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - name: Read Python
+        id: pyversion
+        run: echo "PYTHON_VERSION=$(cat .python-version)" >> $GITHUB_ENV
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '${{ env.PYTHON_VERSION }}'
           cache: 'pip'
       - name: Install dependencies
         run: |

.github/workflows/test-build.yml

@@ -12,10 +12,13 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+      - name: Read Python version
+        id: pyversion
+        run: echo "PYTHON_VERSION=$(cat .python-version)" >> $GITHUB_ENV
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '${{ env.PYTHON_VERSION }}'
           cache: 'pip'
       - name: Install dependencies
         run: |

.python-version

@@ -1 +1 @@
-3.8.13
+3.11.13

README.md

@@ -33,10 +33,10 @@ $ pip install --requirement requirements.txt
 If your system Python is not compatible with the required packages, we suggest that you install Python in a Conda environment using the [Micromamba](https://mamba.readthedocs.io/en/latest/user_guide/micromamba.html) package manager for Conda.
 
 - Begin by [installing the Micromamba package manager](https://mamba.readthedocs.io/en/latest/installation/micromamba-installation.html).
-- Install Python 3.11 in a new environment.
+- Install the Python version listed in `.python-version` in a new environment.
 ```
 $ micromamba env create --name ulhpc-docs-python
-$ micromamba install python=3.11 --channel conda-forge --name ulhpc-docs-python
+$ micromamba install python=$(cat .python-version) --channel conda-forge --name ulhpc-docs-python
 ```
 - You now have 2 options. First options is to install the required python packages directly in the Conda environment.
 ```