Updated to ES 9.1.0

Author: ezimuel

.buildkite/pipeline.yml

@@ -7,8 +7,8 @@ steps:
     env:
       PHP_VERSION: "{{ matrix.php }}"
       TEST_SUITE: "{{ matrix.suite }}"
-      STACK_VERSION: 9.0.0-SNAPSHOT
-      BRANCH_CLIENT_TESTS: 9.0
+      STACK_VERSION: 9.1.0-SNAPSHOT
+      BRANCH_CLIENT_TESTS: 9.1
     matrix:
       setup:
         suite:

.github/workflows/integration_test.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         php-version: [8.1, 8.2, 8.3, 8.4]
         os: [ubuntu-latest]
-        es-version: [9.0.0-SNAPSHOT]
+        es-version: [9.1.0-SNAPSHOT]
 
     steps:
     - name: Checkout

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         php-version: [8.1, 8.2, 8.3, 8.4]
         os: [ubuntu-latest]
-        es-version: [9.0.0-SNAPSHOT]
+        es-version: [9.1.0-SNAPSHOT]
 
     steps:
     - name: Checkout

.github/workflows/yaml_test.yml

@@ -11,9 +11,9 @@ jobs:
       matrix:
         php-version: [8.1, 8.2, 8.3, 8.4]
         os: [ubuntu-latest]
-        es-version: [9.0.0-SNAPSHOT]
+        es-version: [9.1.0-SNAPSHOT]
         test-suite: [stack]
-        branch-client-tests: ["9.0"]
+        branch-client-tests: ["9.1"]
 
     steps:
     - name: Checkout