Previously, dependency management for JNA was provided by
spring-boot-dependencies so it affected users' applications. It was
original added for Elasticsearch but is no longer needed for that
purpose. We use JNA in spring-boot-buildpack-platform which is used
by our Gradle and Maven plugins and should not affect an application's
use of JNA.
This commit moves management of JNA from spring-boot-dependencies into
spring-boot-parent. This means that users' applications will now be
free to use whatever version of JNA meets their needs while still
controlling the version used for image building via Gradle or Maven.
Closes gh-20156
Update all dependencies declarations to use the form `scope(reference)`
rather than `scope reference`.
Prior to this commit we declared dependencies without parentheses unless
we were forced to add them due to an `exclude`.
Replace Gradle single quote strings with the double quote form
whenever possible. The change helps to being consistency to the
dependencies section where mostly single quotes were used, but
occasionally double quotes were required due to `${}` references.