Update release distributions. (#842)

* Drop Debian Jessie and Stretch which are no longer supported upstream.
* Add Debian Buster
* Add Ubuntu Jammy

stdeb.cfg

@@ -10,8 +10,8 @@ Depends3: python3-rosdep-modules (>= 0.21.0)
 Conflicts: python3-rosdep, python-rosdep2, python3-rosdep2
 Conflicts3: python-rosdep, python-rosdep2, python3-rosdep2
 Copyright-File: LICENSE
-Suite: bionic jessie stretch buster
-Suite3: bionic focal jessie stretch buster
+Suite: bionic buster
+Suite3: bionic focal jammy buster bullseye
 Python2-Depends-Name: python
 X-Python3-Version: >= 3.4
 Setup-Env-Vars: SKIP_PYTHON_MODULES=1
@@ -24,8 +24,8 @@ Conflicts3: python3-rosdep (<< 0.18.0), python3-rosdep2
 Replaces: python-rosdep (<< 0.18.0)
 Replaces3: python3-rosdep (<< 0.18.0)
 Copyright-File: LICENSE
-Suite: bionic jessie stretch buster
-Suite3: bionic focal jessie stretch buster
+Suite: bionic buster
+Suite3: bionic focal jammy buster bullseye
 Python2-Depends-Name: python
 X-Python3-Version: >= 3.4
 Setup-Env-Vars: SKIP_PYTHON_SCRIPTS=1