Update spring core to v5.3.37

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.springframework:spring-test	5.3.36 -> 5.3.37
org.springframework:spring-context	5.3.36 -> 5.3.37

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Release Notes

spring-projects/spring-framework (org.springframework:spring-test)

v5.3.37

Compare Source

⭐ New Features

• AnnotationUtils performance degrades with deep stacks #​32923

🐞 Bug Fixes

• AspectJ CTW aspects executed twice #​32974
• SpEL compilation fails when indexing into a Map with a primitive #​32911
• SpEL compilation fails when indexing into an array or list with an Integer #​32909
• Application not starting with @EnableTransactionManagement(mode = AdviceMode.ASPECTJ) #​32885

🔨 Dependency Upgrades

• Upgrade to Reactor 2020.0.45 #​33010

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