fix: 7.0/cli/Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN11-LIBXML2-2413974
- https://snyk.io/vuln/SNYK-DEBIAN11-LIBXML2-2806812
- https://snyk.io/vuln/SNYK-DEBIAN11-OPENLDAP-2808413
- https://snyk.io/vuln/SNYK-DEBIAN11-OPENSSL-2807596
- https://snyk.io/vuln/SNYK-DEBIAN11-OPENSSL-2807596

7.0/cli/Dockerfile

@@ -1,4 +1,4 @@
-FROM php:7.3-cli
+FROM php:7.4.16-cli
 MAINTAINER louisbl <louisbl@beltramo.me>
 
 RUN apt-get update && apt-get install -y \