Bump to version 0.52.0

[ivoanjo]

Getting ready to release 0.52.0. For more details, see the changelog.

[codecov-commenter]

Codecov Report

Merging #1642 (a0ce232) into master (e9d6ffc) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1642      +/-   ##
==========================================
- Coverage   98.31%   98.30%   -0.01%     
==========================================
  Files         901      901              
  Lines       43532    43532              
==========================================
- Hits        42797    42796       -1     
- Misses        735      736       +1     

Impacted Files	Coverage Δ
spec/ddtrace/profiling/ext/forking_spec.rb	99.38% <0.00%> (-0.62%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e9d6ffc...a0ce232. Read the comment docs.