Update Loops to security release beta.15

scripts/chart-version.sh

@@ -1,8 +1,8 @@
 #!/bin/sh
 set -eu
-# Loops has no upstream SemVer release. Its source commit is the Git tag.
-description=$(git describe --tags --long --match 'f[0-9a-f]*' --dirty)
+# Chart releases follow the upstream Loops application release tag.
+description=$(git describe --tags --long --match 'v[0-9]*' --dirty)
 case "$description" in *-dirty) echo 'Refusing dirty tree' >&2; exit 1 ;; esac
-version=0.0.0-$description
+version=${description#v}
 case "$version" in *-0-g*) version=${version%%-0-g*} ;; esac
 printf '%s\n' "$version"