GEODE-10089: Update benchmark baseline

Updates the default benchmark baseline on support/1.15 to 1.15.0
diff --git a/infrastructure/scripts/aws/run_against_baseline.sh b/infrastructure/scripts/aws/run_against_baseline.sh
index 5fa72d0..703f403 100755
--- a/infrastructure/scripts/aws/run_against_baseline.sh
+++ b/infrastructure/scripts/aws/run_against_baseline.sh
@@ -33,7 +33,7 @@
 DEFAULT_BASELINE_REPO='apache/geode'
 DEFAULT_BASELINE_REPO_URL="https://github.com/${DEFAULT_BASELINE_REPO}"
 BASELINE_REPO=${DEFAULT_BASELINE_REPO}
-DEFAULT_BASELINE_VERSION=1.14.4
+DEFAULT_BASELINE_VERSION=1.15.0
 BASELINE_VERSION=${DEFAULT_BASELINE_VERSION}
 
 TAG=