[mcp23017] Fixes openhab#9503 by updating Pi4j to the recently releas…

…ed version 1.4. (openhab#10293)

This version introduces Java 11 compatibility by implementing a missing
function as native code and thus dropping the dependency to the
function jdk.internal.misc.SharedSecrets.
See Pi4J/pi4j-v1#442 for details.

Signed-off-by: Michael Rumpf <michael@rumpfonline.de>

bundles/org.openhab.binding.mcp23017/pom.xml

@@ -18,13 +18,13 @@
  <dependency>
  <groupId>com.pi4j</groupId>
  <artifactId>pi4j-core</artifactId>
- <version>1.2</version>
+ <version>1.4</version>
  <scope>compile</scope>
  </dependency>
  <dependency>
  <groupId>com.pi4j</groupId>
  <artifactId>pi4j-gpio-extension</artifactId>
- <version>1.2</version>
+ <version>1.3</version>
  <scope>compile</scope>
  </dependency>
  </dependencies>