Use match from python 3.10 in generated source

[codecov[bot]]

Codecov Report

Merging #302 (15d678c) into develop (bb29614) will decrease coverage by 0.01%. The diff coverage is 95.65%.

@@             Coverage Diff             @@
##           develop     #302      +/-   ##
===========================================
- Coverage    86.45%   86.44%   -0.02%     
===========================================
  Files          100      100              
  Lines         9998     9986      -12     
===========================================
- Hits          8644     8632      -12     
  Misses        1354     1354              

Impacted Files	Coverage Δ
src/generate/convert/control_flow.rs	92.59% <90.00%> (+0.23%)	:arrow_up:
src/generate/ast/mod.rs	89.91% <100.00%> (-0.09%)	:arrow_down:
src/generate/ast/node.rs	90.90% <100.00%> (-0.69%)	:arrow_down:
src/parse/control_flow_expr.rs	93.19% <100.00%> (ø)
src/generate/convert/ty.rs	77.27% <0.00%> (-2.28%)	:arrow_down:
src/generate/convert/mod.rs	95.25% <0.00%> (ø)
src/check/constrain/generate/collection.rs	88.46% <0.00%> (+1.92%)	:arrow_up:

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[JSAbrahams]

Coverage decrease appears to be due to simplification of application logic. So, that's a good thing in this case.