Revert change of ecpglib major version
The major version of ecpglib was changed in
bd7c95f0c1a38becffceb3ea7234d57167f6d4bf, apparently without
justification. Revert this, since nothing has changed in this library
except some added functions.
Discussion: https://www.postgresql.org/message-id/flat/
48ee4c56-e1df-b39d-2cad-
c7d80b120eb5%402ndquadrant.com