PMM-14837 Move dashboards to monorepo (#4277)

* PMM-14837 Move dashboards to monorepo

* Remove grafana-dashboards submodule

* chore: trigger the build

* chore: trigger the build

* chore: trigger the build

* PMM-14837 Reset ci.yml

Author: ademidoff

.gitmodules

@@ -1,4 +1,4 @@
-# PMM Client and Server Components
+# PMM Client and Server Components (monorepo)
 [submodule "pmm"]
 	path = sources/pmm/src/github.com/percona/pmm
 	url = https://github.com/percona/pmm
@@ -39,10 +39,6 @@
 	branch = release-3.7.2
 
 # PMM Server
-[submodule "grafana-dashboards"]
-	path = sources/grafana-dashboards
-	url = https://github.com/percona/grafana-dashboards
-	branch = main
 [submodule "grafana"]
 	path = sources/grafana/src/github.com/grafana/grafana
 	url = https://github.com/percona/grafana