core: bump the minor group across 1 directory with 2 updates

Bumps the minor group with 2 updates in the /core directory: [io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations](https://github.com/open-telemetry/opentelemetry-java-instrumentation) and [com.gradleup.shadow](https://github.com/GradleUp/shadow).


Updates `io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations` from 2.25.0 to 2.26.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/CHANGELOG.md)
- [Commits](open-telemetry/opentelemetry-java-instrumentation@v2.25.0...v2.26.0)

Updates `com.gradleup.shadow` from 9.3.2 to 9.4.0
- [Release notes](https://github.com/GradleUp/shadow/releases)
- [Commits](GradleUp/shadow@9.3.2...9.4.0)

---
updated-dependencies:
- dependency-name: io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor
- dependency-name: com.gradleup.shadow
  dependency-version: 9.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

core/gradle/libs.versions.toml

@@ -62,7 +62,7 @@ spotbugs-annotations = { module = 'com.github.spotbugs:spotbugs-annotations', ve
 jansi = { module = 'org.fusesource.jansi:jansi', version = '2.4.+' } # Apache 2.0
 
 opentelemetry-api = { module = 'io.opentelemetry:opentelemetry-api', version.ref = 'otel' }
-opentelemetry-instrumentation-annotations = { module = 'io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations', version = '2.25.0' }
+opentelemetry-instrumentation-annotations = { module = 'io.opentelemetry.instrumentation:opentelemetry-instrumentation-annotations', version = '2.26.0' }
 
 kaml = { module = 'com.charleskorn.kaml:kaml', version = '0.104.0' } # Apache 2.0
 
@@ -81,5 +81,5 @@ kotlin-serialization = { id = 'org.jetbrains.kotlin.plugin.serialization', versi
 # java
 spotbugs = { id = 'com.github.spotbugs', version = '6.0.9' }
 spotless = { id = 'com.diffplug.spotless', version = '8.3.0' }
-shadow = { id = 'com.gradleup.shadow', version = '9.3.2' }
+shadow = { id = 'com.gradleup.shadow', version = '9.4.0' }
 versions = { id = 'com.github.ben-manes.versions', version = '0.53.0' }