Upgrade to google-cloud-monitoring 3.2.9

Resolves micrometer-metricsgh-3229

Upgrade to Dropwizard metrics-graphite 4.1.32

Resolves micrometer-metricsgh-3227

Merge branch '1.7.x' into 1.8.x

Improve consistency with unified code format/imports (micrometer-metr…

…ics#3156)

Configures the spring-javaformat plugin to enforce and apply code formatting as part of the build. Applies the formatting to existing code. Also adds to editorconfig configuration for import order and updates all imports. There is no generic support for Java import order configuration in editorconfig, so an IntelliJ specific configuration is used.

Bumped version to 1.10.0-M1

Write dependency locks for release

Closes micrometer-metricsgh-3128

Merge branch '1.7.x' into 1.8.x

Return value of aspect-timed method is Nullable

It can cause issues in Kotlin for this to be incorrectly marked as `@NonNullApi`.

Closes micrometer-metricsgh-3041