src/meta-openembedded:python3-ipython: upgrade 7.25.0 -> 7.26.0

IPython 7.26 is a minor release that fixes a couple of issues, updates in API and Copyright/Licenses issues around various part of the codebase.

We’ll highlight this issue <ipython/ipython#13039> pointing out we were including and refereeing to code from Stack Overflow which was CC-BY-SA, hence incompatible with the BSD license of IPython. This lead us to a rewriting of the corresponding logic which in our case was done in a more efficient way (in our case we were searching string prefixes instead of full strings).

You will notice also a number of documentation improvements and cleanup.
Of particular interest are the following Pull-requests:
The IPython directive now uses Sphinx logging for warnings. PR #13030.
Add expiry days option to pastebin magic and change http protocol to https. PR #13056
Make Ipython.utils.timing work with jupyterlite PR #13050.

Signed-off-by: Zheng Ruoqin <[email protected]>
Signed-off-by: Khem Raj <[email protected]>
Signed-off-by: Trevor Gamblin <[email protected]>