Changed the precompiling directives

[FrankUrbach]

Changing the precompiling directives was necessary for 1.7.2 compatibility reasons.
All tests are green for this.

[codecov]

Codecov Report

Merging #127 (a238cec) into main (ff10951) will increase coverage by 0.53%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #127      +/-   ##
==========================================
+ Coverage   25.05%   25.58%   +0.53%     
==========================================
  Files          50       50              
  Lines        7951     7644     -307     
==========================================
- Hits         1992     1956      -36     
+ Misses       5959     5688     -271     

Impacted Files	Coverage Δ
src/precompile/precompile_ProtoBuf.jl	0.00% <ø> (ø)
src/core/CoreSession.jl	0.00% <0.00%> (ø)
src/logic/Explanation.jl	0.00% <0.00%> (ø)
src/stream/ResponseCollector.jl	0.00% <0.00%> (ø)
src/stream/RequestTransmitter.jl	0.00% <0.00%> (ø)
src/stream/BidirectionalStream.jl	0.00% <0.00%> (ø)
src/generated/session_pb.jl	23.30% <0.00%> (+0.15%)	⬆️
src/standard/utils.jl	11.42% <0.00%> (+0.31%)	⬆️
src/generated/core_database_pb.jl	30.23% <0.00%> (+0.32%)	⬆️
src/generated/answer_pb.jl	18.15% <0.00%> (+0.38%)	⬆️
... and 7 more

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[tk3369]

LGTM