fix(env): update Go Coverage Tool version to v1.1.13

Author: mrz1836

.github/.env.base

@@ -147,7 +147,7 @@ GO_COVERAGE_PROVIDER=internal
 CODECOV_TOKEN_REQUIRED=false
 
 # Go Coverage Tool Version
-GO_COVERAGE_VERSION=v1.1.12           # https://github.com/mrz1836/go-coverage/releases
+GO_COVERAGE_VERSION=v1.1.13           # https://github.com/mrz1836/go-coverage/releases
 GO_COVERAGE_USE_LOCAL=false           # Use local version for development
 
 # Core Coverage Settings