re-add gcp_compute as a valid plugin name

commit ccbde5f93e introduced
a backwards-incompatible change which made ansible-inventory
no longer recognize `gcp_compute` as a valid package name.

This would break users who are use `gcp_compute` (instead of the
new `google.cloud.gcp_compute`). Accepting both until at least
a major version change.

fixes #536.

changelogs/.plugin-cache.yaml

@@ -870,4 +870,4 @@ plugins:
   strategy: {}
   test: {}
   vars: {}
-version: 1.1.1
+version: 1.1.2

changelogs/changelog.yaml

@@ -31,3 +31,10 @@ releases:
     fragments:
     - fix-2.7.yml
     release_date: '2022-12-16'
+  1.1.2:
+    changes:
+      bugfixes:
+      - fix `gcp_compute` no longer being a valid name of the inventory plugin
+    fragments:
+    - fix-inventory-plugin.yml
+    release_date: '2022-12-21'