utils/bump_version.sh: add Git-Dch header to commit message
This tells 'gbp dch' to ignore version-bump commits when generating the d/changelog file.
Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org
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This tells 'gbp dch' to ignore version-bump commits when generating the d/changelog file.
Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org