docs: bump Maven coordinate examples to 0.12.2

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: dfa1

README.md

@@ -66,7 +66,7 @@ line-by-line diff is zero.
 <dependency>
   <groupId>io.github.dfa1.vortex</groupId>
   <artifactId>vortex-reader</artifactId>
-  <version>0.12.1</version>
+  <version>0.12.2</version>
 </dependency>
 ```
 
@@ -99,7 +99,7 @@ try (VortexReader vf = VortexReader.open(Path.of("data/example.vortex"));
 <dependency>
   <groupId>io.github.dfa1.vortex</groupId>
   <artifactId>vortex-writer</artifactId>
-  <version>0.12.1</version>
+  <version>0.12.2</version>
 </dependency>
 ```
 

docs/compatibility.md

@@ -12,14 +12,14 @@ A consumer that only needs to read Vortex files can depend on a strict subset:
 <dependency>
   <groupId>io.github.dfa1.vortex</groupId>
   <artifactId>vortex-reader</artifactId>
-  <version>0.12.1</version>
+  <version>0.12.2</version>
 </dependency>
 
 <!-- optional: inspector for layout-tree introspection -->
 <dependency>
   <groupId>io.github.dfa1.vortex</groupId>
   <artifactId>vortex-inspector</artifactId>
-  <version>0.12.1</version>
+  <version>0.12.2</version>
 </dependency>
 ```
 

docs/tutorial.md

@@ -26,7 +26,7 @@ Add the dependency to `pom.xml` (inside `<dependencies>`):
 <dependency>
   <groupId>io.github.dfa1.vortex</groupId>
   <artifactId>vortex-reader</artifactId>
-  <version>0.12.1</version>
+  <version>0.12.2</version>
 </dependency>
 ```