update:php_services to 1.0.15

vendor/guzzlehttp/psr7/.github/FUNDING.yml

+github: [Nyholm, GrahamCampbell]
+tidelift: "packagist/guzzlehttp/psr7"

vendor/guzzlehttp/psr7/.github/stale.yml

+daysUntilStale: 120
+daysUntilClose: 14
+exemptLabels:
+  - lifecycle/keep-open
+  - lifecycle/ready-for-merge
+# Label to use when marking an issue as stale
+staleLabel: lifecycle/stale
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed after 2 weeks if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false