Add 2026 July ESIP talk

[maxrjones]

What I did

Adds a link to Tom's ESIP presentation.

Acceptance criteria:

• Closes #xxxx
• Tests added
• Tests passing
• No test coverage regression
• Full type hint coverage
• Changes are documented in docs/about/releases.md
• New functions/methods are listed in an appropriate *.md file under docs/api
• New functionality has documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.37%. Comparing base (8dc2cb7) to head (468968a).

❗ There is a different number of reports uploaded between BASE (8dc2cb7) and HEAD (468968a). Click for more details.

HEAD has 83 uploads less than BASE

Flag	BASE (8dc2cb7)	HEAD (468968a)
unittests	84	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1094       +/-   ##
===========================================
- Coverage   89.67%   73.37%   -16.30%     
===========================================
  Files          41       41               
  Lines        2682     2678        -4     
===========================================
- Hits         2405     1965      -440     
- Misses        277      713      +436     

see 20 files with indirect coverage changes

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