Bump io.opentelemetry.instrumentation:opentelemetry-instrumentation-bom-alpha from 2.8.0-alpha to 2.12.0-alpha #49026

Job	Run time
CI Sanity Check	31s
Initial JDK 17 Build	8m 46s
Attach pull request number	2s
Calculate Test Jobs	0s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Maven Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK ${{ matrix.java.name }}	0s
Native Tests - ${{ matrix.category }}	0s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Build report	25s
Upload build stats to collector	0s
	9m 44s

Provide feedback