fix python version 3.1 -> '3.10'

Author: dugalh

.github/workflows/install-test-conda-forge.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ macos-latest, ubuntu-latest, windows-latest ]
-        python-version: [ 3.7, 3.8, 3.9, 3.10 ]
+        python-version: ['3.7', '3.8', '3.9', '3.10']
     steps:
     - uses: actions/checkout@v2  # for the test data
     - uses: conda-incubator/setup-miniconda@v2

.github/workflows/install-test-pypi.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ macos-latest, ubuntu-latest ]
-        python-version: [ 3.6, 3.7, 3.8, 3.9, 3.10 ]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
       - uses: actions/checkout@v2   # checkout repository with test data
       - name: Set up Python

.github/workflows/install-test-testpypi.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ macos-latest, ubuntu-latest ]
-        python-version: [ 3.6, 3.7, 3.8, 3.9, 3.10 ]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
       - uses: actions/checkout@v2   # checkout repository with test data
       - name: Set up Python

.github/workflows/publish-testpypi.yml

@@ -37,7 +37,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ macos-latest, ubuntu-latest ]
-        python-version: [ 3.6, 3.7, 3.8, 3.9, 3.10 ]
+        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
     steps:
       - uses: actions/checkout@v2   # checkout repository so we can use test data
       - name: Set up Python