[jhbuild] Update the minimum Python version to 3.7

[Bastien Nocera <hadess src gnome org>]

commit b810541b644a91933f6ea0c86e8837c0116601e8
Author: Dan Yeaw <dan yeaw me>
Date:   Wed Dec 29 15:59:23 2021 -0500

    Update the minimum Python version to 3.7
    
    PyGObject requires Python 3.7, and both Python 3.5 and 3.6 are now
    EOL.

 README.rst          | 2 +-
 configure.ac        | 2 +-
 doc/C/index.docbook | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/README.rst b/README.rst
index ebfa5012..7bbd7962 100644
--- a/README.rst
+++ b/README.rst
@@ -7,7 +7,7 @@ packages, called “modules”.
 JHBuild was originally written for building GNOME, but has since been
 extended to be usable with other projects.
 
-JHBuild requires Python >= 3.5
+JHBuild requires Python >= 3.7
 
 Installing JHBuild
 ------------------
diff --git a/configure.ac b/configure.ac
index fe5a411b..8f02e089 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,7 +26,7 @@ if test -n "$PYTHON" && ! command -v "$PYTHON" > /dev/null; then
        AC_MSG_ERROR([Python interpreter $PYTHON does not exist])
 fi
 
-m4_define(python3_min_ver, 3.5)
+m4_define(python3_min_ver, 3.7)
 AM_PATH_PYTHON([python3_min_ver])
 
 AC_SUBST([PYTHON_BASENAME], [$(basename "$PYTHON")])
diff --git a/doc/C/index.docbook b/doc/C/index.docbook
index 20fb5c47..601e4a26 100644
--- a/doc/C/index.docbook
+++ b/doc/C/index.docbook
@@ -88,7 +88,7 @@
     <section id="getting-started-install">
       <title>Installing JHBuild</title>
 
-      <para>JHBuild requires a Python runtime. Verify Python &gt;= 3.5 is
+      <para>JHBuild requires a Python runtime. Verify Python &gt;= 3.7 is
         installed.</para>
 
       <para>The recommended way to download JHBuild is via the version control