Upgrade Apache Calcite to 1.26

[aluccaroni]

This is a reminder of the task to update to Calcite 1.26 (when available):

• Checkout https://calcite.apache.org/news/releases/ regarding Calcite 1.25 and 1.26
• See [CALCITE-4113] Support LEFT join in EnumerableMergeJoin apache/calcite#2107 regarding "Enumerable Merge Join"
• Double check that no deprecated rule is in use (Upgrade Apache Calcite to 1.24 #666)

CC: @eolivelli @amitvc

[eolivelli]

I have tested Calcite 1.16rc0.
I have created this PR #707 because it will force an additional third party dep that we don't want.

Also in order to upgrade to 1.26 we will have to implement the "SEARCH" argument, similar to the Sarg (Sarg stands for "search argument.") feature of Oracle
https://docs.oracle.com/javadb/10.8.3.0/tuning/ctuntransform13966.html

Probably we will have to use RexUtils#expandSarg but it needs additional plumbing, probably it is better to fully implement the operator, and possibly push it down to Index Scans