ci: Use plus instead of hyphen for Conan recipe version suffix

[bthomee]

High Level Overview of Change

This change uses a + to separate a version suffix (commit hash) instead of a -.

Context of Change

Conan recipes use semantic versioning, and since our version already creates a hyphen the second hyphen causes Conan to ignore it. The plus sign is a valid separator we can use instead.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (non-breaking change that only restructures code)
• Performance (increase or change in throughput and/or latency)
• Tests (you added tests for code that already exists, or your new feature included in this PR)
• Documentation update
• Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)
• Release

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.4%. Comparing base (a4f8aa6) to head (779eb7b).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #6261   +/-   ##
=======================================
  Coverage     79.4%   79.4%           
=======================================
  Files          839     839           
  Lines        71619   71619           
  Branches      8234    8232    -2     
=======================================
+ Hits         56852   56853    +1     
+ Misses       14767   14766    -1     

see 2 files with indirect coverage changes

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