Update epicscorelibs and fix CI

[AlexanderWells-diamond]

Something in this release of EPICS made it no longer safe to fork() after any channel access has been done, using either aioca or cothread

[codecov[bot]]

Codecov Report

Merging #109 (7422e41) into master (77ec950) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #109   +/-   ##
=======================================
  Coverage   87.64%   87.64%           
=======================================
  Files          14       14           
  Lines         963      963           
=======================================
  Hits          844      844           
  Misses        119      119           

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[github-actions[bot]]

Unit Test Results

     15 files  +       5       15 suites  +5   30m 40s :stopwatch: - 27m 14s    230 tests ±       0     224 :heavy_check_mark: +     69      6 :zzz: ±  0  0 :x:  -   69  3 450 runs  +1 150  3 010 :heavy_check_mark: +1 258  440 :zzz: +30  0 :x:  - 138 

Results for commit 7422e41d. ± Comparison against base commit 77ec9505.

:recycle: This comment has been updated with latest results.

[AlexanderWells-diamond]

Merged to master in 3f0ec72. For some reason Github didn't detect I'd merged it manually.