Revert "Specify python 3.11 (Testing defaults to 3.12)"

Revert submission 59189-pin-pthon3-11

Reason for revert: debian testing removed python3.11 entirely.

Reverted changes: /q/submissionid:59189-pin-pthon3-11

Bypass-Presubmit-Reason: no tests
Change-Id: Ieef97b8fecb061ec276db1d5ec43988ebe033ccf

install-prereqs.sh

diff --git a/install-prereqs.sh b/install-prereqs.sh
index 66785b7..f4772fc 100755
--- a/install-prereqs.sh
+++ b/install-prereqs.sh
@@ -80,9 +80,8 @@
     pv
     python-is-python3
     python3-protobuf
-    # TODO(b/354016078)
-    python3.11
-    python3.11-dev
+    python3
+    python3-dev
     python3-pip
     python3-venv
     rsync
@@ -140,8 +139,7 @@
         # Setup python virtual environment.
         if [[ ! -f "${PYTHON_SHODAN_ENV}/bin/activate" ]]; then
             echo Creating virtual python environment ${PYTHON_SHODAN_ENV}
-            # TODO(b/354016078)
-            python3.11 -m venv --system-site-packages --upgrade-deps "${PYTHON_SHODAN_ENV}"
+            python3 -m venv --system-site-packages --upgrade-deps "${PYTHON_SHODAN_ENV}"
         fi
         local -a PIP_INSTALL_ARGS=()
         for REQ_FILE in ${PYTHON_REQUIREMENTS} ; do