Add a few instructions to release template

[olivialynn]

• Adding some things that came up as I was going through the release process for the first time
• I'm just guessing on the procedure for the hash mismatch, as this was what seemed logical and worked for me--happy to change the explanation to something else
• Also happy to change any of the other wording here

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.29%. Comparing base (3c58493) to head (7dd5b4c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1137   +/-   ##
=======================================
  Coverage   96.29%   96.29%           
=======================================
  Files          46       46           
  Lines        2782     2782           
=======================================
  Hits         2679     2679           
  Misses        103      103           

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[github-actions]

Before [3c58493] <v0.7.1>	After [4c5018e]	Ratio	Benchmark (Parameter)
5.81±0.01s	5.85±0s	1.01	benchmarks.time_create_large_catalog
866±3ms	873±5ms	1.01	benchmarks.time_create_midsize_catalog
571±2ms	574±2ms	1.01	benchmarks.time_open_many_columns_list
17.2±0.02s	17.4±0.03s	1.01	benchmarks.time_save_big_catalog
23.6±0.1ms	23.5±0.4ms	1	benchmarks.time_box_filter_on_partition
7.63±0.04s	7.59±0.01s	1	benchmarks.time_lazy_crossmatch_many_columns_all_suffixes
3.73±0s	3.71±0.03s	1	benchmarks.time_open_many_columns_all
742±3ms	744±4ms	1	benchmarks.time_open_many_columns_default
39.9±0.4ms	40.0±0.6ms	1	benchmarks.time_polygon_search
78.7±0.4ms	77.9±0.9ms	0.99	benchmarks.time_kdtree_crossmatch

Click here to view all benchmarks.

[delucchi-cmu]

Thanks! Looks great!