fix: show error when Nextcloud or OpenProject is unreachable in bashscript

[nabim777]

Description

This change improves in bash script for error handling when checking the Nextcloud or openproject instance status. If the nextcloud or openproject instance is unreachable or returns an error, the script now logs a error message.

Related Issue or Workpackage

• Fixes <issue_link>

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Updated CHANGELOG.md file

[saw-jan]

Port to other release branches

[nabim777]

/backport to release/2.11

[backportbot]

The backport to release/2.11 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout release/2.11
git pull origin release/2.11

# Create the new backport branch
git checkout -b backport/1083/release/2.11

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick dee05836 e947f06f

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/1083/release/2.11

Error: Failed to cherry pick commits: error: no cherry-pick or revert in progress
fatal: cherry-pick failed

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[nabim777]

/backport a09ec09 to release/2.11

[nabim777]

/backport a09ec09 to release/3.1

[github-actions]

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