Update PHP runtimes to gather fixes (#87)

Author: mhenke1

core/php7.2Action/Dockerfile

@@ -15,7 +15,7 @@
 # limitations under the License.
 #
 
-FROM php:7.2.29-alpine
+FROM php:7.2.30-alpine
 
 RUN \
     apk update && apk upgrade && \

core/php7.3Action/Dockerfile

@@ -28,7 +28,7 @@ RUN curl -sL \
   && cd openwhisk-runtime-go-*/main\
   && GO111MODULE=on go build -o /bin/proxy
 
-FROM php:7.3.16-cli-stretch
+FROM php:7.3.17-cli-stretch
 
 # select the builder to use
 ARG GO_PROXY_BUILD_FROM=release

core/php7.4Action/Dockerfile

@@ -28,7 +28,7 @@ RUN curl -sL \
   && cd openwhisk-runtime-go-*/main\
   && GO111MODULE=on go build -o /bin/proxy
 
-FROM php:7.4.4-cli-buster
+FROM php:7.4.5-cli-buster
 
 # select the builder to use
 ARG GO_PROXY_BUILD_FROM=release