vagrant: upgrade pythons

e.g. on freebsd13, <3.9.10 has sysconfigdata issues

Vagrantfile

@@ -242,8 +242,8 @@ def install_pythons(boxname)
     . ~/.bash_profile
     echo "PYTHON_CONFIGURE_OPTS: ${PYTHON_CONFIGURE_OPTS}"
     pyenv install 3.11.2  # tests, binary build
-    pyenv install 3.10.1  # tests
-    pyenv install 3.9.1   # tests
+    pyenv install 3.10.2  # tests
+    pyenv install 3.9.10  # tests
     pyenv rehash
   EOF
 end
@@ -309,8 +309,8 @@ def run_tests(boxname, skip_env)
     . ../borg-env/bin/activate
     if which pyenv 2> /dev/null; then
       # for testing, use the earliest point releases of the supported python versions:
-      pyenv global 3.9.1 3.10.1 3.11.2
-      pyenv local 3.9.1 3.10.1 3.11.2
+      pyenv global 3.9.10 3.10.2 3.11.2
+      pyenv local 3.9.10 3.10.2 3.11.2
     fi
     # otherwise: just use the system python
     # some OSes can only run specific test envs, e.g. because they miss FUSE support: