fixes #72

[Eric-Maddox]

fix IOException after MS changed response
use correct ContentType to avoid 400 error
Includes unit test.

[spyder007]

@Eric-Maddox I will gladly create a release for this, but the pipeline is not currently building, can you take a look?

[Eric-Maddox]

I don't know why the build is failing. If I create an empty folder, and do a git clone from my fork, then type mvn it builds successfully.
The method it's complaining about is InputStream.nullInputStream(). Documentation says it's been their "Since 11"
https://download.java.net/java/early_access/panama/docs/api/java.base/java/io/InputStream.html#nullInputStream()

[olamartensson]

Hi! We are using this plugin and are now seeing the exact same issue on our TeamCity instance.

Could the broken build be fixed by bumping the Java version in the GitHub workflow config? It seems to currently be configured for Java 8 (java-version: 1.8) and the nullInputStream() method was added in Java 11, as you wrote.

[spyder007]

@Eric-Maddox Can you please sync with the latest commit on master? I moved the build to JDK 11, which hopefully fixes this build error.

[spyder007]

lgtm

[spyder007]

@Eric-Maddox / @olamartensson -> This is merged and I created a new release (2.13.0).

[olamartensson]

Thanks a lot! I have now tested the new release on our TeamCity instance and Teams notifications are working again 👍