ci(release): change semantic release branch (#102)

## PR Checklist

Please check if your PR fulfills the following requirements:

<!--- [ ] Tests for the changes have been added (for bug
fixes/features)-->

- [ ] Docs have been added/updated (for bug fixes/features)

## PR Type

What kind of change does this PR introduce?

<!-- Please check the one that applies to this PR using "x". -->

- [ ] Bugfix
- [ ] Feature
- [ ] Code style update (formatting, local variables)
- [ ] Refactoring (no functional changes, no API changes)
- [x] Build related changes
- [x] CI-related changes
- [ ] Documentation content changes
- [ ] Other... Please describe:

## Issue Number

<!-- Bugs and features must be linked to an issue. -->

Issue Number: N/A

## Does this PR introduce a breaking change?

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and migration path for existing applications below. -->

- [ ] Yes
- [x] No

## Other information

Switch from main branch to release branch for deploy and production
documentation

@coderabbitai summary

Author: MGREMY

.nxreleaserc.json

@@ -1,5 +1,5 @@
 {
   "repositoryUrl": "https://github.com/themesberg/flowbite-angular",
   "tagFormat": "${PROJECT_NAME}@v${version}",
-  "branches": ["main"]
+  "branches": ["release"]
 }

apps/docs/ng-doc.config.ts

@@ -14,7 +14,7 @@ const config: NgDocConfiguration = {
   repoConfig: {
     url: 'https://github.com/themesberg/flowbite-angular',
     mainBranch: 'main',
-    releaseBranch: 'main',
+    releaseBranch: 'release',
   },
   shiki: {
     themes: {

libs/flowbite-angular/project.json

@@ -39,7 +39,7 @@
         "npm": true,
         "changelog": true,
         "branches": [
-          "main",
+          "release",
           {
             "name": "beta",
             "prerelease": true