Don't run CI github actions that commit/push on forks

.buildkite/run_linter.sh

@@ -8,7 +8,7 @@ source .buildkite/publish/git-setup.sh
 
 init_python
 
-if is_pr; then
+if is_pr && ! is_fork; then
   echo "We're on PR, running autoformat"
   if ! make autoformat ; then
     echo "make autoformat ran with errors, exiting"

.buildkite/run_notice_check.sh

@@ -14,7 +14,7 @@ if [ -z "$(git status --porcelain | grep NOTICE.txt)" ]; then
   exit 0
 else 
   git --no-pager diff
-  if is_pr; then
+  if is_pr && ! is_fork; then
     export GH_TOKEN="$VAULT_GITHUB_TOKEN"
 
     git add NOTICE.txt

.buildkite/shared.sh

@@ -34,3 +34,11 @@ is_pr() {
     return 0 # true
   fi
 }
+
+is_fork() {
+  if [ "BUILDKITE_PULL_REQUEST_REPO" = "https://github.com/elastic/connectors.git"]; then
+    return 1 # false
+  else
+    return 0 # true
+  fi
+}