updating dapr version to 1.15.0-rc.18 (#1168)

Signed-off-by: Fernando Rocha <[email protected]>

Author: rochabr

.github/env/global.env

@@ -1,5 +1,5 @@
-DAPR_CLI_VERSION: 1.15.0-rc.5
-DAPR_RUNTIME_VERSION: 1.15.0-rc.11
+DAPR_CLI_VERSION: 1.15.0-rc.6
+DAPR_RUNTIME_VERSION: 1.15.0-rc.18
 DAPR_INSTALL_URL: https://raw.githubusercontent.com/dapr/cli/v${DAPR_CLI_VERSION}/install/
 DAPR_DEFAULT_IMAGE_REGISTRY: ghcr