release-07.28.2021-10.54

🚀 What's new?

@austin-schaefer - Remove very old compatibility callout ->
@austin-schaefer - Sort order: Metric API first in list of MELT APIs ->
@josemore - Explaining ARM64 is supported ->
@x8a - Merge pull request #3296 from josemore/patch-11 ->
@zuluecho9 - Assorted changes ->
@josemore - Update query-infrastructure-dimensional-metrics-nrql.mdx ->
@zuluecho9 - few changes ->
@x8a - Merge pull request #3300 from josemore/patch-13 ->
@zuluecho9 - Merge pull request #3299 from newrelic/fixing-image-in-user-mgmt-section ->
@austin-schaefer - Merge pull request #3293 from newrelic/melt-not-eltm ->
@austin-schaefer - Merge pull request #3291 from newrelic/kafka-compatibility-callout ->