feat: Add admin role to public API (no-changelog) (#7933)

## Summary
Add the admin global role to the public API. This does not include
porting over scopes.

#### How to test the change:
1. ...


## Issues fixed
Include links to Github issue or Community forum post or **Linear
ticket**:
> Important in order to close automatically and provide context to
reviewers

...


## Review / Merge checklist
- [ ] PR title and summary are descriptive. **Remember, the title
automatically goes into the changelog. Use `(no-changelog)` otherwise.**
([conventions](https://github.com/n8n-io/n8n/blob/master/.github/pull_request_title_conventions.md))
- [ ] [Docs updated](https://github.com/n8n-io/n8n-docs) or follow-up
ticket created.
- [ ] Tests included.
> A bug is not considered fixed, unless a test is added to prevent it
from happening again. A feature is not complete without tests.
  >
> *(internal)* You can use Slack commands to trigger [e2e
tests](https://www.notion.so/n8n/How-to-use-Test-Instances-d65f49dfc51f441ea44367fb6f67eb0a?pvs=4#a39f9e5ba64a48b58a71d81c837e8227)
or [deploy test
instance](https://www.notion.so/n8n/How-to-use-Test-Instances-d65f49dfc51f441ea44367fb6f67eb0a?pvs=4#f6a177d32bde4b57ae2da0b8e454bfce)
or [deploy early access version on
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packages/cli/src/PublicApi/v1/handlers/credentials/credentials.handler.ts

@@ -23,7 +23,7 @@ import { Container } from 'typedi';
 
 export = {
 	createCredential: [
-		authorize(['owner', 'member']),
+		authorize(['owner', 'admin', 'member']),
 		validCredentialType,
 		validCredentialsProperties,
 		async (
@@ -47,7 +47,7 @@ export = {
 		},
 	],
 	deleteCredential: [
-		authorize(['owner', 'member']),
+		authorize(['owner', 'admin', 'member']),
 		async (
 			req: CredentialRequest.Delete,
 			res: express.Response,
@@ -55,7 +55,7 @@ export = {
 			const { id: credentialId } = req.params;
 			let credential: CredentialsEntity | undefined;
 
-			if (req.user.globalRole.name !== 'owner') {
+			if (!['owner', 'admin'].includes(req.user.globalRole.name)) {
 				const shared = await getSharedCredentials(req.user.id, credentialId, [
 					'credentials',
 					'role',
@@ -78,7 +78,7 @@ export = {
 	],
 
 	getCredentialType: [
-		authorize(['owner', 'member']),
+		authorize(['owner', 'admin', 'member']),
 		async (req: CredentialTypeRequest.Get, res: express.Response): Promise<express.Response> => {
 			const { credentialTypeName } = req.params;