Add develop branch

[quietsy]

Added a develop branch to nextcloud for "beta" releases.

The latest version is found using the following command:

curl -sX GET https://api.github.com/repos/nextcloud/server/releases \
      | jq -r '.[] | select(.prerelease == true) | .tag_name' \
      | sed 's|^v||g' | sort -rV | head -1

Then downloaded from the following location:

https://download.nextcloud.com/server/prereleases/nextcloud-${NEXTCLOUD_RELEASE}.tar.bz2

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-4e3dd742751a4bdc2c2fff51722b200561f45494-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-4e3dd742751a4bdc2c2fff51722b200561f45494-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-59d697de-dev-4e3dd742751a4bdc2c2fff51722b200561f45494-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-59d697de-dev-4e3dd742751a4bdc2c2fff51722b200561f45494-pr-352	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-ba0cbda526ed4c8a886b3b2c2dc2f3eb3c85ac0e-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-ba0cbda526ed4c8a886b3b2c2dc2f3eb3c85ac0e-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-59d697de-dev-ba0cbda526ed4c8a886b3b2c2dc2f3eb3c85ac0e-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-59d697de-dev-ba0cbda526ed4c8a886b3b2c2dc2f3eb3c85ac0e-pr-352	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-aa9f871a7400cfde5389ca0d4eded7e36cb354b3-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-aa9f871a7400cfde5389ca0d4eded7e36cb354b3-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-59d697de-dev-aa9f871a7400cfde5389ca0d4eded7e36cb354b3-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-59d697de-dev-aa9f871a7400cfde5389ca0d4eded7e36cb354b3-pr-352	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-c9668bdb57ab35939efe060d3f14cbb1026a2efd-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-c9668bdb57ab35939efe060d3f14cbb1026a2efd-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-59d697de-dev-c9668bdb57ab35939efe060d3f14cbb1026a2efd-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-59d697de-dev-c9668bdb57ab35939efe060d3f14cbb1026a2efd-pr-352	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-fe937a6cc4ea896919c8b8cf58a931d58b744e62-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-59d697de-dev-fe937a6cc4ea896919c8b8cf58a931d58b744e62-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-59d697de-dev-fe937a6cc4ea896919c8b8cf58a931d58b744e62-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-59d697de-dev-fe937a6cc4ea896919c8b8cf58a931d58b744e62-pr-352	✅

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-a3af9d1b-dev-a7f9b4c8429c56536b5ae035e6d6605a158950c4-pr-352/index.html https://ci-tests.linuxserver.io/lspipepr/nextcloud/develop-27.0.2rc1-pkg-a3af9d1b-dev-a7f9b4c8429c56536b5ae035e6d6605a158950c4-pr-352/shellcheck-result.xml	Tag	Passed
amd64-develop-27.0.2rc1-pkg-a3af9d1b-dev-a7f9b4c8429c56536b5ae035e6d6605a158950c4-pr-352	✅
arm64v8-develop-27.0.2rc1-pkg-a3af9d1b-dev-a7f9b4c8429c56536b5ae035e6d6605a158950c4-pr-352	✅