Jenkins 2.375.2 - Adding changelog & upgrade guide (#5793)

This PR is to add the changelog and upgrade guide for the next LTS
release (2.375.2) on January 11

There is no content for the upgrade guide at this time, based on the
[backporting ticket](jenkinsci/jenkins#7517)

content/_data/changelogs/lts.yml

@@ -8404,6 +8404,70 @@
     message: |-
       Ensure that temporary network partitions do not cancel the WebSocket ping thread (regression in 2.363).
 
+- version: "2.375.2"
+  date: 2022-01-11
+  changes:
+
+  - type: rfe
+    category: rfe
+    pull: 7470
+    issue: 70199
+    authors:
+      - daniel-beck
+    pr_title: "[JENKINS-70199] Add distributed builds telemetry"
+    message: |-
+      Add telemetry related to distributed builds.
+
+  - type: major bug
+    category: bug
+    pull: 7407
+    issue: 70105
+    authors:
+      - dependabot
+      - amuniz
+    pr_title: "[JENKINS-70105] Slow down WebSocket reconnect logic when the controller is responding"
+    references:
+      - url: https://github.com/jenkinsci/remoting/pull/603
+        title: Slow down websocket re-connect
+    message: |-
+      Wait for 10 seconds before attempting to reconnect a WebSocket agent, regardless of whether or not the controller is responding.
+
+  - type: major bug
+    category: bug
+    pull: 7412
+    issue: 70103
+    authors:
+      - jglick
+      - amuniz
+    pr_title: "[JENKINS-70103] `WeakHashMap` broken for looking up Jetty `Session` in WebSocket response"
+    message: |-
+      Memory leak when repeatedly connecting WebSocket agents.
+
+  - type: bug
+    category: bug
+    pull: 7385
+    issue: 70083
+    authors:
+      - daniel-beck
+    pr_title: "[JENKINS-70083] Update bundled script-security and junit versions"
+    references:
+      - url: https://www.jenkins.io/security/advisory/2022-11-15/
+        title: Jenkins Security Advisory 2022-11-15
+    message: |-
+      Updated bundled Script Security plugin from 1189.vb_a_b_7c8fd5fde to 1190.v65867a_a_47126.
+      Updated JUnit plugin from 1156.vcf492e95a_a_b_0 to 1160.vf1f01a_a_ea_b_7f.
+
+  - type: bug
+    category: bug
+    pull: 7348
+    issue: 69587
+    authors:
+      - janfaracik
+    pr_title: "[JENKINS-69587] Fix console view bouncing when new entries appear"
+    references:
+    message: |-
+      Fix console-view bouncing when new entries appear.
+
 # DO NOT EDIT THIS FILE DIRECTLY
 # ALL CHANGES MUST GO THROUGH PULL REQUESTS
 # MALFORMED FILE CONTENTS WILL BREAK THE SITE BUILD

content/_data/upgrades/2-375-2.adoc

@@ -0,0 +1 @@
+No notable changes requiring upgrade notes.