fix pre commit nightly (demisto#34058)

Author: ilaner

.gitlab/ci/.gitlab-ci.global.yml

@@ -469,7 +469,7 @@
         fi
       fi
     - |
-      if [[ -f coverage_report ]]; then
+      if [[ -d coverage_report ]]; then
         cp -r coverage_report artifacts/coverage_report
       fi
     - |

.pre-commit-config_template.yaml

@@ -205,6 +205,7 @@ repos:
     description: validate conf.json
     files: Tests/conf.json
     skip:commit: true
+    skip:nightly: true
     entry: validate-conf-json
     pass_filenames: false
     language: system