Fix "Build containers" CI failure when repository has no v* git tags

[Copilot]

git describe --tags --match 'v*' exits with code 128 when no matching tags exist, causing the "Build meta" step to abort under set -Eeuo pipefail.

Change

In .github/workflows/continuous-integration.yml, made commit_version derivation fault-tolerant by suppressing the fatal stderr message and falling back to "dev" on failure:

# Before
commit_version=$(git describe --tags --match 'v*' "${commit_sha}"| sed -e 's/^v//; ...')

# After
commit_version=$(git describe --tags --match 'v*' "${commit_sha}" 2>/dev/null | sed -e 's/^v//; ...') || commit_version="dev"

This handles forks and shallow clones that lack upstream version tags without affecting builds that do have tags.