Add Continuous Receiver Gathers template and grid override + Re-pin fsspec for regression bug

[BrianMichell]

fsspec regression related to fsspec/filesystem_spec#1982
Dependency was bumped but not tested by #847

[codecov]

Codecov Report

❌ Patch coverage is 98.84615% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.33%. Comparing base (c3ba558) to head (4c7cf86).
⚠️ Report is 247 commits behind head on main.

Files with missing lines	Patch %	Lines
src/mdio/ingestion/segy/index_strategies.py	94.91%	1 Missing and 2 partials ⚠️
tests/integration/conftest.py	96.59%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #851      +/-   ##
==========================================
+ Coverage   85.30%   93.33%   +8.02%     
==========================================
  Files          46      148     +102     
  Lines        2219     8776    +6557     
  Branches      306      490     +184     
==========================================
+ Hits         1893     8191    +6298     
- Misses        281      508     +227     
- Partials       45       77      +32     

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