Bump com.github.johnrengelman.shadow from 7.1.2 to 8.1.0 in /examples/extension (#7923)

Bumps com.github.johnrengelman.shadow from 7.1.2 to 8.1.0.


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=com.github.johnrengelman.shadow&package-manager=gradle&previous-version=7.1.2&new-version=8.1.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

You can trigger a rebase of this PR by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

examples/extension/build.gradle

@@ -10,7 +10,7 @@ plugins {
   into a single jar.
   See https://imperceptiblethoughts.com/shadow/ for more details about Shadow plugin.
    */
-  id "com.github.johnrengelman.shadow" version "7.1.2"
+  id "com.github.johnrengelman.shadow" version "8.1.0"
   id "com.diffplug.spotless" version "6.16.0"
 
   id "io.opentelemetry.instrumentation.muzzle-generation" version "1.24.0-alpha-SNAPSHOT"