Add changelog for 3.1.2 (pingcap#2607)

CHANGELOG.md

@@ -1,6 +1,18 @@
 # TiSpark Changelog
 All notable changes to this project will be documented in this file.
 
+## [TiSpark 3.1.2] 2022-12-12
+### New Features
+- Support write into partition table with new collations [#2570](https://github.com/pingcap/tispark/pull/2570)
+- Support read TiFlash load balancing with Round-Robin strategy [#2576](https://github.com/pingcap/tispark/pull/2576)
+- Support partition pruning with to_days function when read from TiKV/TiFlash [#2594](https://github.com/pingcap/tispark/pull/2594) [#2600](https://github.com/pingcap/tispark/pull/2594)
+
+### Fixes
+- Fix CBO to let TiSpark choose the min cost between TiKV table scan, TiKV index scan and TiFlash scan correctly [#2568](https://github.com/pingcap/tispark/pull/2568)
+- Fix the `region not find` error when reading from TiKV [#2575](https://github.com/pingcap/tispark/pull/2575)
+- Fix the bug that statistics is not collected which may affect the choice of plans [#2589](https://github.com/pingcap/tispark/pull/2589)
+- Compatible with TiDB v6.5.0 [#2602](https://github.com/pingcap/tispark/pull/2602)
+
 ## [TiSpark 3.1.1] 2022-09-23
 ### Fixes
 - Fix fail to read from some partition table [#2553](https://github.com/pingcap/tispark/pull/2553)

pom.xml

@@ -75,8 +75,8 @@
         <spark.version.release>3.0</spark.version.release>
         <spark3_0.version>3.0.3</spark3_0.version>
         <spark3_1.version>3.1.3</spark3_1.version>
-        <spark3_2.version>3.2.2</spark3_2.version>
-        <spark3_3.version>3.3.0</spark3_3.version>
+        <spark3_2.version>3.2.3</spark3_2.version>
+        <spark3_3.version>3.3.1</spark3_3.version>
         <scala.binary.version>2.12</scala.binary.version>
         <scala.version>2.12.10</scala.version>
         <scala.version.release>2.12</scala.version.release>