Bump ipython from 8.18.1 to 8.20.0 in /dependabot (#19)

* Bump ipython from 8.18.1 to 8.20.0 in /dependabot

Bumps [ipython](https://github.com/ipython/ipython) from 8.18.1 to 8.20.0.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@8.18.1...8.20.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Version synchronization

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: dependabot[bot] <dependabot[bot]@users.noreply.github.com>

dependabot/requirements.txt

@@ -20,7 +20,7 @@ grokcore.viewlet==4.0
 grokcore.xmlrpc==4.1
 grokui.admin==1.0
 grokui.base==0.8.2
-ipython==8.18.1
+ipython==8.20.0
 martian==2.0.post1
 z3c.evalexception==4.0
 z3c.flashmessage==3.0

grok-versions.cfg

@@ -22,7 +22,7 @@ grokcore.viewlet = 4.0
 grokcore.xmlrpc = 4.1
 grokui.admin = 1.0
 grokui.base = 0.8.2
-ipython = 8.18.1
+ipython = 8.20.0
 martian = 2.0.post1
 z3c.evalexception = 4.0
 z3c.flashmessage = 3.0