Merge "Revert "Specify python3 version in apt install commands""

install-prereqs.sh

diff --git a/install-prereqs.sh b/install-prereqs.sh
index 858d98e..f91045c 100755
--- a/install-prereqs.sh
+++ b/install-prereqs.sh
@@ -77,8 +77,8 @@
     pv
     python-is-python3
     python3-protobuf
-    python3.9
-    python3.9-dev
+    python3
+    python3-dev
     python3-pip
     rsync
     srecord