feat: remove existing size labels before adding new (#74)

Author: mathusanm6

.github/workflows/pr-size-labeler.yml

@@ -18,6 +18,29 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Remove existing size labels
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const sizeLabels = ['size/XS', 'size/S', 'size/M', 'size/L', 'size/XL'];
+            const { data: labels } = await github.rest.issues.listLabelsOnIssue({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+            });
+
+            for (const label of labels) {
+              if (sizeLabels.includes(label.name)) {
+                console.log(`Removing existing size label: ${label.name}`);
+                await github.rest.issues.removeLabel({
+                  owner: context.repo.owner,
+                  repo: context.repo.repo,
+                  issue_number: context.issue.number,
+                  name: label.name,
+                });
+              }
+            }
+
       - name: Label PR based on size
         uses: codelytv/pr-size-labeler@v1
         with: