Bump ScalaTest to 3.2.20 and fix GPG decryption example in changelog.

Author: yruslan

README.md

@@ -2165,12 +2165,12 @@ A: Update hadoop dll to version 3.2.2 or newer.
     - [#869](https://github.com/AbsaOSS/cobrix/pull/869) Added support for REDEFINES when writing EBCDIC files from Spark DataFrames. Thanks @Il-Pela!
     - [#757](https://github.com/AbsaOSS/cobrix/issues/757) Added support for GPG transparent decryption when reading data files
       ```scala
-      val df = spark.read
+      spark.read
         .format("cobol")
         .option("copybook", copybookPath)
         .option("gpg_private_key", gpgPrivateKey) // -----BEGIN PGP PRIVATE KEY BLOCK----- ...
-        .option("gpg_private_key", gpg_private_key_passphrase)
-        .load("/some/path")
+        .option("gpg_private_key_passphrase", gpg_private_key_passphrase)
+        .load("/some/path/*.gpg")
       ```
  
 - #### 2.10.8 released 3 August 2026.

pom.xml

@@ -105,7 +105,7 @@
         <scala.version>2.12.21</scala.version>
         <scala.compat.version>2.12</scala.compat.version>
         <spark.version>3.5.7</spark.version>
-        <scalatest.version>3.2.19</scalatest.version>
+        <scalatest.version>3.2.20</scalatest.version>
         <specs.version>2.4.16</specs.version>
         <jackson.version>2.15.4</jackson.version>
         <mockito.version>4.11.0</mockito.version>

project/Dependencies.scala

@@ -23,7 +23,7 @@ object Dependencies {
   private val jacksonVersion = "2.15.4"
   private val bouncycastleVersion = "1.84"
 
-  private val scalatestVersion = "3.2.19"
+  private val scalatestVersion = "3.2.20"
   private val mockitoVersion = "4.11.0"
 
   private val defaultSparkVersionForScala211 = "2.4.8"