Gradle update

[jawalonoski]

Upgrade gradle to version 7.0.2.

Should fix #886.

[codecov]

Codecov Report

Merging #894 (7d4ab51) into master (c1baca8) will increase coverage by 0%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #894    +/-   ##
=========================================
  Coverage        81%     82%            
- Complexity     2725    2756    +31     
=========================================
  Files           101     101            
  Lines         16405   16405            
  Branches       2331    2331            
=========================================
+ Hits          13409   13550   +141     
+ Misses         2260    2139   -121     
+ Partials        736     716    -20     

Impacted Files	Coverage Δ
...ava/org/mitre/synthea/modules/LifecycleModule.java	91% <0%> (+<1%)	⬆️
src/main/java/org/mitre/synthea/engine/State.java	87% <0%> (+<1%)	⬆️
src/main/java/org/mitre/synthea/engine/Logic.java	84% <0%> (+<1%)	⬆️
...main/java/org/mitre/synthea/helpers/Utilities.java	81% <0%> (+<1%)	⬆️
...in/java/org/mitre/synthea/world/agents/Person.java	86% <0%> (+<1%)	⬆️
...c/main/java/org/mitre/synthea/export/FhirStu3.java	84% <0%> (+<1%)	⬆️
.../java/org/mitre/synthea/world/agents/Provider.java	88% <0%> (+<1%)	⬆️
.../main/java/org/mitre/synthea/export/FhirDstu2.java	86% <0%> (+1%)	⬆️
...org/mitre/synthea/export/ClinicalNoteExporter.java	80% <0%> (+1%)	⬆️
...e/synthea/modules/CardiovascularDiseaseModule.java	95% <0%> (+1%)	⬆️
... and 7 more

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