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-compiler-test/src/main/java/org/codehaus/plexus/compiler/AbstractCompilerTest.java

@@ -111,7 +111,7 @@ protected final Compiler getCompiler() {
     protected List<String> getClasspath() throws Exception {
         List<String> cp = new ArrayList<>();
 
-        File file = getLocalArtifactPath("commons-lang", "commons-lang", "2.0", "jar");
+        File file = getLocalArtifactPath("commons-lang", "commons-lang", "2.6", "jar");
 
         assertThat(
                 "test prerequisite: commons-lang library must be available in local repository at " + file,

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>