[bot][releases] Update readme with link to latest vizier release. (#2097)

Summary: TSIA

Type of change: /kind cleanup

Test Plan: N/A

Signed-off-by: pixie-io-buildbot <build@pixielabs.ai>

Author: pixie-io-buildbot

README.md

@@ -179,7 +179,7 @@ We version separate components of Pixie separately, so what Github shows as the
 We maintain links to the latest releases for all components here:
 - [CLI v0.8.8](https://github.com/pixie-io/pixie/releases/tag/release/cli/v0.8.8)<!--cli-latest-release-->
 - [Cloud v0.1.8](https://github.com/pixie-io/pixie/releases/tag/release/cloud/v0.1.8)<!--cloud-latest-release-->
-- [Vizier v0.14.14](https://github.com/pixie-io/pixie/releases/tag/release/vizier/v0.14.14)<!--vizier-latest-release-->
+- [Vizier v0.14.15](https://github.com/pixie-io/pixie/releases/tag/release/vizier/v0.14.15)<!--vizier-latest-release-->
 - [Operator v0.1.7](https://github.com/pixie-io/pixie/releases/tag/release/operator/v0.1.7)<!--operator-latest-release-->
 
 ## Changelog

k8s/cloud/public/base/artifact_tracker_versions.yaml

@@ -11,7 +11,7 @@ spec:
         - name: artifact-tracker-server # yamllint disable rule:indentation
           env:
             - name: PL_VIZIER_VERSION
-              value: "0.14.14"
+              value: "0.14.15"
             - name: PL_CLI_VERSION
               value: "0.8.8"
             - name: PL_OPERATOR_VERSION