CI: Bump python version for emulated 32 bit tests. Update zlib version on

windows. Roll-back actions/checkout version for 32 bit test due to gha / node
issue (actions/checkout#1681)

Author: pauldmccarthy

.ci/download_zlib.sh

@@ -4,7 +4,7 @@
 #
 set -e
 
-ZLIB_VERSION=1.3
+ZLIB_VERSION=1.3.1
 
 curl -o zlib.tar.gz https://www.zlib.net/zlib-${ZLIB_VERSION}.tar.gz
 

.github/workflows/main.yaml

@@ -14,7 +14,6 @@ defaults:
   run:
     shell: bash
 
-
 jobs:
 
   # Quick tests run on all OSes/python versions
@@ -242,7 +241,7 @@ jobs:
     container: i386/ubuntu:20.04
     strategy:
       matrix:
-        python-version: ["3.9"]
+        python-version: ["3.10"]
         extra-args:     ["", "--concat"]
 
     env:
@@ -254,7 +253,7 @@ jobs:
     steps:
       - name: Install git
         run:  apt-get update -y && apt-get install -y git
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
       - name: Install system dependencies
         run:  bash ./.ci/install_32bit_dependencies.sh
       - name: Create test environment

.github/workflows/pull_request.yaml

@@ -55,7 +55,7 @@ jobs:
     container: i386/ubuntu:20.04
     strategy:
       matrix:
-        python-version: ["3.9"]
+        python-version: ["3.10"]
         extra-args:     ["", "--concat"]
 
     env:
@@ -68,7 +68,7 @@ jobs:
     steps:
       - name: Install git
         run:  apt-get update -y && apt-get install -y git
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v2
       - name: Install system dependencies
         run:  bash ./.ci/install_32bit_dependencies.sh
       - name: Create test environment