Run tests on more pypy versions in CI (#259)

.github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af020c0..32d1298 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,7 +41,20 @@
         # Python version, because typing sometimes changed between bugfix releases.
         # For available versions, see:
         # https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
-        python-version: ["3.7", "3.7.1", "3.8", "3.8.0", "3.9", "3.9.0", "3.10", "3.10.0", "3.11", "3.11.0", "3.12", "pypy3.9"]
+        python-version:
+          - "3.7"
+          - "3.7.1"
+          - "3.8"
+          - "3.8.0"
+          - "3.9"
+          - "3.9.0"
+          - "3.10"
+          - "3.10.0"
+          - "3.11"
+          - "3.11.0"
+          - "3.12"
+          - "pypy3.9"
+          - "pypy3.10"
 
     runs-on: ubuntu-20.04
 

.github/workflows/third_party.yml

diff --git a/.github/workflows/third_party.yml b/.github/workflows/third_party.yml
index 5648a9b..c80375a 100644
--- a/.github/workflows/third_party.yml
+++ b/.github/workflows/third_party.yml
@@ -41,7 +41,7 @@
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "pypy3.9"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
@@ -167,7 +167,7 @@
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "pypy3.9"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
@@ -184,6 +184,7 @@
         uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
       - name: Install typeguard test requirements
         run: pip install -e ./typeguard[test]
       - name: Install typing_extensions latest
@@ -307,7 +308,7 @@
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "pypy3.9"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps: