[SPARK-24945][SQL] Switching to uniVocity 2.7.3

## What changes were proposed in this pull request?

In the PR, I propose to upgrade uniVocity parser from **2.6.3** to **2.7.3**. The recent version includes a fix for the SPARK-24645 issue and has better performance.

Before changes:
```
Parsing quoted values:                   Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
One quoted string                           33336 / 34122          0.0      666727.0       1.0X

Wide rows with 1000 columns:             Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
Select 1000 columns                         90287 / 91713          0.0       90286.9       1.0X
Select 100 columns                          31826 / 36589          0.0       31826.4       2.8X
Select one column                           25738 / 25872          0.0       25737.9       3.5X
count()                                       6931 / 7269          0.1        6931.5      13.0X
```
after:
```
Parsing quoted values:                   Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
One quoted string                           33411 / 33510          0.0      668211.4       1.0X

Wide rows with 1000 columns:             Best/Avg Time(ms)    Rate(M/s)   Per Row(ns)   Relative
------------------------------------------------------------------------------------------------
Select 1000 columns                         88028 / 89311          0.0       88028.1       1.0X
Select 100 columns                          29010 / 32755          0.0       29010.1       3.0X
Select one column                           22936 / 22953          0.0       22936.5       3.8X
count()                                       6657 / 6740          0.2        6656.6      13.5X
```
Closes #21892

## How was this patch tested?

It was tested by `CSVSuite` and `CSVBenchmarks`

Author: Maxim Gekk <[email protected]>

Closes #21969 from MaxGekk/univocity-2_7_3.

Author: MaxGekk

dev/deps/spark-deps-hadoop-2.6

@@ -191,7 +191,7 @@ stax-api-1.0.1.jar
 stream-2.7.0.jar
 stringtemplate-3.2.1.jar
 super-csv-2.2.0.jar
-univocity-parsers-2.6.3.jar
+univocity-parsers-2.7.3.jar
 validation-api-1.1.0.Final.jar
 xbean-asm6-shaded-4.8.jar
 xercesImpl-2.9.1.jar

dev/deps/spark-deps-hadoop-2.7

@@ -192,7 +192,7 @@ stax-api-1.0.1.jar
 stream-2.7.0.jar
 stringtemplate-3.2.1.jar
 super-csv-2.2.0.jar
-univocity-parsers-2.6.3.jar
+univocity-parsers-2.7.3.jar
 validation-api-1.1.0.Final.jar
 xbean-asm6-shaded-4.8.jar
 xercesImpl-2.9.1.jar

dev/deps/spark-deps-hadoop-3.1

@@ -212,7 +212,7 @@ stream-2.7.0.jar
 stringtemplate-3.2.1.jar
 super-csv-2.2.0.jar
 token-provider-1.0.1.jar
-univocity-parsers-2.6.3.jar
+univocity-parsers-2.7.3.jar
 validation-api-1.1.0.Final.jar
 woodstox-core-5.0.3.jar
 xbean-asm6-shaded-4.8.jar

sql/core/pom.xml

@@ -38,7 +38,7 @@
     <dependency>
       <groupId>com.univocity</groupId>
       <artifactId>univocity-parsers</artifactId>
-      <version>2.6.3</version>
+      <version>2.7.3</version>
       <type>jar</type>
     </dependency>
     <dependency>