[OOB] Upgrades 'php' to '1.40.0'

[SvcGitHubPATagentoperatorimages]

Automated OOB update requested by SvcGitHubPATagentoperatorimages.

Agent: php
Version: 1.39.0 -> 1.40.0

[github-actions]

Images built:

dotnet-core: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-core@sha256:c6a8003bdb69e624cb41ae08c4a3dfcee0008d577dd37088d6d1ccd0eda3cdd0
dotnet-framework: ghcr.io/contrast-security-oss/agent-operator-images/agent-dotnet-framework@sha256:43414b616e436b3f8e9682be22974de4d45cca8d5efb7668277bea0c7a208ae2
java: ghcr.io/contrast-security-oss/agent-operator-images/agent-java@sha256:38e68825c03eb0dac1e388bdadde7e4ef5189b845dba4a4c69d28987292b00d9
nodejs: ghcr.io/contrast-security-oss/agent-operator-images/agent-nodejs@sha256:31387a056c4ad38638bc727158a7384affbb3f7798b4812aebbb2e2b30c25bb1
php: ghcr.io/contrast-security-oss/agent-operator-images/agent-php@sha256:d35d850beb3dfb684b2021bf017d5d899a7e07406774e75ae243747e743e0b0b
python: ghcr.io/contrast-security-oss/agent-operator-images/agent-python@sha256:273a91d4d4dfb9f74771deda1cf37c4b12d760816dfc74bd76708ac8990ac6dd