support for redis7 group family for parameter groups

[briggsy87]

SUMMARY AWS cache parameters groups can now be of type redis7. This PR adds to the module elasticache_parameter_group support to pass this new family group.

ISSUE TYPE Feature Pull Request

COMPONENT NAME Impacted component: elasticache_parameter_group module.

[softwarefactory-project-zuul[bot]]

Build succeeded. https://ansible.softwarefactory-project.io/zuul/buildset/aeedb13bbb1e43dc824c49ad4580dc62

:heavy_check_mark: ansible-galaxy-importer SUCCESS in 3m 12s (non-voting) :heavy_check_mark: build-ansible-collection SUCCESS in 10m 27s :heavy_check_mark: ansible-test-splitter SUCCESS in 4m 06s Skipped 22 jobs

[markuman]

Can you also add a changelog fragment? Otherwise it looks good to me

[markuman]

it's just that

diff --git a/changelogs/fragments/2254-add-redis7x-cache-parameter-group-family.yml b/changelogs/fragments/2254-add-redis7x-cache-parameter-group-family.yml
new file mode 100644
index 00000000..7a97f631
--- /dev/null
+++ b/changelogs/fragments/2254-add-redis7x-cache-parameter-group-family.yml
@@ -0,0 +1,2 @@
+minor_changes:
+  - elasticache_parameter_group - add ``redis7.x`` group family on the module input choices (https://github.com/ansible-collections/community.aws/pull/2254).

and we can merge it.
ref https://github.com/ansible-collections/community.aws/commit/784669d2b856518209fdd1e4aca58eed6eb49ba2