Drop truthy.check-keys from yamllint (does not supported on CI)

https://clickhouse-test-reports.s3.yandex.net/21019/e9226904530afa0262a4c478ddd6d7d7d82293cf/style_check.html#fail1

.github/workflows/anchore-analysis.yml

@@ -8,7 +8,7 @@
 
 name: Docker Container Scan (clickhouse-server)
 
-on:
+"on":
   pull_request:
     paths:
       - docker/server/Dockerfile

.yamllint

@@ -13,5 +13,3 @@ rules:
         min-spaces-from-content: 1
     document-start:
         present: false
-    truthy:
-        check-keys: false