Update .github/workflows/release.yml

Co-authored-by: Dmitry Tokarev <dtokarev@nvidia.com>
Signed-off-by: Pavithra Vijayakrishnan <160681768+pvijayakrish@users.noreply.github.com>

Author: pvijayakrish

.github/workflows/release.yml

@@ -49,7 +49,7 @@ jobs:
             exit 1
           fi
 
-          if [[ ! "$BRANCH_NAME" =~ ^release/.+ ]]; then
+          if [[ ! "$BRANCH_NAME" =~ ^release/[0-9]+\.[0-9]+\.[0-9].+ ]]; then
             echo "Error: workflow_dispatch must be triggered from a release/* branch"
             echo "Current branch: $BRANCH_NAME"
             exit 1