PHPC-2617: Run Github Actions tests on PHP 8.5

Author: alcaeus

.github/workflows/tests.yml

@@ -25,6 +25,7 @@ jobs:
           - "8.2"
           - "8.3"
           - "8.4"
+          - "8.5"
         mongodb-version:
           - "6.0"
         topology:
@@ -125,7 +126,7 @@ jobs:
       fail-fast: false
       matrix:
         # Note: keep this in sync with the Windows matrix in package-release.yml
-        php: [ "8.1", "8.2", "8.3", "8.4" ]
+        php: [ "8.1", "8.2", "8.3", "8.4", "8.5" ]
         arch: [ x64, x86 ]
         ts: [ ts, nts ]