[Java][Spring] fix spaces in signatures

Created by: artemitin

Fixes #10264 (closed)

Following templates were adjusted. Extra spaces removed. Annotation params were expanded like this: from required=false to required = false

The directory modules/openapi-generator/src/main/resources/JavaSpring

beanValidationCore.mustache
bodyParams.mustache
cookieParams.mustache
formParams.mustache
headerParams.mustache
implicitHeader.mustache
pathParams.mustache
queryParams.mustache

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