Update php

Changes:

- docker-library/php@4908ef2: Remove 7.2 (EOL)
- docker-library/php@20ebff4: Merge pull request docker-library/php#1089 from q0rban/add-contributing-md

Author: docker-library-bot

library/php

@@ -153,73 +153,3 @@ Tags: 7.3.25-zts-alpine3.11, 7.3-zts-alpine3.11
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 26e65d3c2acc800f7b8f190540007b8bf0d66047
 Directory: 7.3/alpine3.11/zts
-
-Tags: 7.2.34-cli-buster, 7.2-cli-buster, 7.2.34-buster, 7.2-buster, 7.2.34-cli, 7.2-cli, 7.2.34, 7.2
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/buster/cli
-
-Tags: 7.2.34-apache-buster, 7.2-apache-buster, 7.2.34-apache, 7.2-apache
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/buster/apache
-
-Tags: 7.2.34-fpm-buster, 7.2-fpm-buster, 7.2.34-fpm, 7.2-fpm
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/buster/fpm
-
-Tags: 7.2.34-zts-buster, 7.2-zts-buster, 7.2.34-zts, 7.2-zts
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/buster/zts
-
-Tags: 7.2.34-cli-stretch, 7.2-cli-stretch, 7.2.34-stretch, 7.2-stretch
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/stretch/cli
-
-Tags: 7.2.34-apache-stretch, 7.2-apache-stretch
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/stretch/apache
-
-Tags: 7.2.34-fpm-stretch, 7.2-fpm-stretch
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/stretch/fpm
-
-Tags: 7.2.34-zts-stretch, 7.2-zts-stretch
-Architectures: amd64, arm32v5, arm32v7, arm64v8, i386
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/stretch/zts
-
-Tags: 7.2.34-cli-alpine3.12, 7.2-cli-alpine3.12, 7.2.34-alpine3.12, 7.2-alpine3.12, 7.2.34-cli-alpine, 7.2-cli-alpine, 7.2.34-alpine, 7.2-alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.12/cli
-
-Tags: 7.2.34-fpm-alpine3.12, 7.2-fpm-alpine3.12, 7.2.34-fpm-alpine, 7.2-fpm-alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.12/fpm
-
-Tags: 7.2.34-zts-alpine3.12, 7.2-zts-alpine3.12, 7.2.34-zts-alpine, 7.2-zts-alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.12/zts
-
-Tags: 7.2.34-cli-alpine3.11, 7.2-cli-alpine3.11, 7.2.34-alpine3.11, 7.2-alpine3.11
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.11/cli
-
-Tags: 7.2.34-fpm-alpine3.11, 7.2-fpm-alpine3.11
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.11/fpm
-
-Tags: 7.2.34-zts-alpine3.11, 7.2-zts-alpine3.11
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 3dc9a6988d478fae0f0b8b871d10e611b50e3d0c
-Directory: 7.2/alpine3.11/zts