Bump commons-lang:commons-lang from 2.0 to 2.6

Bumps commons-lang:commons-lang from 2.0 to 2.6.

---
updated-dependencies:
- dependency-name: commons-lang:commons-lang
  dependency-version: '2.6'
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

plexus-compiler-test/pom.xml

@@ -59,7 +59,7 @@
     <dependency>
       <groupId>commons-lang</groupId>
       <artifactId>commons-lang</artifactId>
-      <version>2.0</version>
+      <version>2.6</version>
       <scope>runtime</scope>
     </dependency>
   </dependencies>

plexus-compilers/pom.xml

@@ -40,7 +40,7 @@
     <dependency>
       <groupId>commons-lang</groupId>
       <artifactId>commons-lang</artifactId>
-      <version>2.0</version>
+      <version>2.6</version>
       <scope>test</scope>
     </dependency>
   </dependencies>