Revert "Add Java 22 to testing matrix"

This reverts commit 02aa9fb.

Author: mark-vieira

.buildkite/pipelines/periodic.template.yml

@@ -73,7 +73,6 @@ steps:
               - openjdk19
               - openjdk20
               - openjdk21
-              - openjdk22
             GRADLE_TASK:
               - checkPart1
               - checkPart2
@@ -181,7 +180,7 @@ steps:
       image: family/elasticsearch-ubuntu-2004
       machineType: n2-standard-8
       buildDirectory: /dev/shm/bk
-    if: build.branch == "main" || build.branch == "7.17"
+    if: build.branch == "main" || build.branch =~ /^[0-9]+\.[0-9]+\$/
   - label: Check branch consistency
     command: .ci/scripts/run-gradle.sh branchConsistency
     timeout_in_minutes: 15

.buildkite/pipelines/periodic.yml

@@ -1184,7 +1184,6 @@ steps:
               - openjdk19
               - openjdk20
               - openjdk21
-              - openjdk22
             GRADLE_TASK:
               - checkPart1
               - checkPart2