update carbon.apimgt.version 6.7.7
update carbon.apimgt.version 6.7.7

tharikaGitHub/product-apim,wso2/product-apim,chamilaadhi/product-apim,wso2/product-apim,chamilaadhi/product-apim,tharikaGitHub/product-apim,wso2/product-apim,wso2/product-apim,chamilaadhi/product-apim,chamilaadhi/product-apim,tharikaGitHub/product-apim,tharikaGitHub/product-apim,wso2/product-apim,chamilaadhi/product-apim,tharikaGitHub/product-apim