Fix auto milestone workflow title regex
diff --git a/.github/workflows/assign-issue-milestone.yaml b/.github/workflows/assign-issue-milestone.yaml
index 8e64d97..aad1687 100644
--- a/.github/workflows/assign-issue-milestone.yaml
+++ b/.github/workflows/assign-issue-milestone.yaml
@@ -75,7 +75,7 @@
 
             // Assign the latest milestone to issues associated with the merged PR
             if (milestoneResults && milestoneResults.data.length > 0) {
-              const milestones = milestoneResults.data.filter(data => data.title.match("^[0-9].[0-9].[0-9].*"));
+              const milestones = milestoneResults.data.filter(data => data.title.match("^[0-9]+.[0-9]+.[0-9]+.*"));
               if (milestones && milestones.length > 0) {
                 const latestMilestone = milestones[0].number;
                 issueNumbers.forEach(issueNumber => {