MAINT: Upgrade to python==3.10

Author: mmcky

.github/workflows/cache.yml

@@ -15,7 +15,7 @@ jobs:
           auto-update-conda: true
           auto-activate-base: true
           miniconda-version: 'latest'
-          python-version: 3.9
+          python-version: "3.10"
           environment-file: environment.yml
           activate-environment: quantecon
       - name: Install latex dependencies

.github/workflows/execution.yml

@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.9"]
+        python-version: ["3.10"]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -53,7 +53,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["macos-latest"]
-        python-version: ["3.8"]
+        python-version: ["3.10"]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -85,7 +85,7 @@ jobs:
   #     fail-fast: false
   #     matrix:
   #       os: ["windows-latest"]
-  #       python-version: ["3.8"]
+  #       python-version: ["3.10"]
   #   steps:
   #     - name: Checkout
   #       uses: actions/checkout@v2

.github/workflows/linkcheck.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"]
-        python-version: ["3.9"]
+        python-version: ["3.10"]
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -23,7 +23,7 @@ jobs:
           auto-update-conda: true
           auto-activate-base: true
           miniconda-version: 'latest'
-          python-version: 3.9
+          python-version: "3.10"
           environment-file: environment.yml
           activate-environment: quantecon
       - name: Download "build" folder (cache)

.github/workflows/publish.yml

@@ -16,7 +16,7 @@ jobs:
           auto-update-conda: true
           auto-activate-base: true
           miniconda-version: 'latest'
-          python-version: 3.9
+          python-version: "3.10"
           environment-file: environment.yml
           activate-environment: quantecon
       - name: Install latex dependencies