chore: remove agent version pinning in the CI (#9104)

* chore: remove agent version pinning in the CI

* chore: bump .package-version

Author: pkoutsovasilis

.buildkite/bk.integration.pipeline.yml

@@ -12,8 +12,6 @@ env:
   IMAGE_DEBIAN_12: "platform-ingest-elastic-agent-debian-12-1752886846"
   IMAGE_WIN_2022: "platform-ingest-elastic-agent-windows-2022-1752886846"
   IMAGE_WIN_2025: "platform-ingest-elastic-agent-windows-2025-1752886846"
-  # Remove AGENT_VERSION pinning once 8.17.10 DRA and stack are released
-  AGENT_VERSION: "8.17.9-SNAPSHOT"
 
 
 # This section is used to define the plugins that will be used in the pipeline.

.buildkite/integration.pipeline.yml

@@ -9,10 +9,6 @@ env:
   IMAGE_UBUNTU_2204_X86_64: "platform-ingest-elastic-agent-ubuntu-2204-1752886846"
   IMAGE_UBUNTU_2204_ARM_64: "platform-ingest-elastic-agent-ubuntu-2204-aarch64-1752886846"
 
-  # Remove AGENT_PACKAGE_VERSION and BEAT_VERSION pinning once 8.17.10 DRA and stack are released
-  AGENT_PACKAGE_VERSION: "8.17.9"
-  BEAT_VERSION: "8.17.9"
-
 steps:
   - group: "Integration tests: packaging"
     key: "int-packaging"

.package-version

@@ -1 +1 @@
-8.17.9
+8.17.10

testing/integration/ess/upgrade_broken_package_test.go

@@ -32,7 +32,6 @@ func TestUpgradeBrokenPackageVersion(t *testing.T) {
 		Local: false, // requires Agent installation
 		Sudo:  true,  // requires Agent installation
 	})
-	t.Skip("Skip this test until elastic agent version pinning is removed from Integration test runs on CI")
 
 	ctx, cancel := testcontext.WithDeadline(t, context.Background(), time.Now().Add(10*time.Minute))
 	defer cancel()