Update supported pythons to 3.8-3.11 (#1013)

Author: blink1073

.github/workflows/ci.yml

@@ -20,15 +20,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        python-version: ["3.7", "3.11"]
-        exclude:
-           - os: macos-latest
-             python-version: "3.11"  # not yet available
+        python-version: ["3.8", "3.11"]
         include:
           - os: windows-latest
             python-version: "3.9"
           - os: ubuntu-latest
-            python-version: "pypy-3.7"
+            python-version: "pypy-3.8"
           - os: macos-latest
             python-version: "3.10"
           - os: ubuntu-latest
@@ -137,7 +134,7 @@ jobs:
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
         with:
-          python_version: "3.7"
+          python_version: "3.8"
       - name: Install miniumum versions
         uses: jupyterlab/maintainer-tools/.github/actions/install-minimums@v1
       - name: Run the unit tests

pyproject.toml

@@ -17,13 +17,13 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
 ]
 urls = {Homepage = "https://ipython.org"}
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 dependencies = [
     "debugpy>=1.0",
     "ipython>=7.23.1",