gh-112088: Run autoreconf in GHA check_generated_files

The "Check if generated files are up to date" job of GitHub Actions
now runs the "autoreconf -ivf -Werror" command instead of the "make
regen-configure" command to avoid depending on the external quay.io
server.

Regenerate aclocal.m4 and configure using Ubuntu 22.04 versions.

Author: vstinner

.github/workflows/build.yml

@@ -135,23 +135,27 @@ jobs:
           path: config.cache
           key: ${{ github.job }}-${{ runner.os }}-${{ needs.check_source.outputs.config_hash }}-${{ env.pythonLocation }}
       - name: Install Dependencies
-        run: sudo ./.github/workflows/posix-deps-apt.sh
+        run: |
+          sudo ./.github/workflows/posix-deps-apt.sh
       - name: Add ccache to PATH
         run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
       - name: Configure ccache action
         uses: hendrikmuhs/[email protected]
       - name: Check Autoconf and aclocal versions
         run: |
           grep "Generated by GNU Autoconf 2.71" configure
-          grep "aclocal 1.16.4" aclocal.m4
+          grep "aclocal 1.16.5" aclocal.m4
           grep -q "runstatedir" configure
           grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
       - name: Configure CPython
         run: |
           # Build Python with the libpython dynamic library
           ./configure --config-cache --with-pydebug --enable-shared
-      - name: Regenerate autoconf files with container image
-        run: make regen-configure
+      - name: Regenerate autoconf files
+        # gh-112088: Don't run "make regen-configure" to avoid dependency
+        # on external quay.io server.
+        run: |
+          autoreconf -ivf -Werror
       - name: Build CPython
         run: |
           make -j4 regen-all

.github/workflows/posix-deps-apt.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 apt-get update
 
+# autoconf-archive is needed by autoreconf (check_generated_files job)
 apt-get -yq install \
     build-essential \
     pkg-config \