Merge bitcoin/bitcoin#26873: doc: add databases/py-sqlite3 to FreeBSD test suite deps

376e01b doc: add databases/py-sqlite3 to FreeBSD test suite deps (fanquake)

Pull request description:

  Adds missing documentation. See also https://cirrus-ci.com/task/5639240319500288.

ACKs for top commit:
  john-moffett:
    ACK 376e01b

Tree-SHA512: a7b8d0bae00c3538934d23eae207b7927a64e748eb228ac6c5754aee0e9b6796c0f39066c7d81cc009bf442c8b1a0c31739adde87d1ebc3445aed54dda47c9ce

Author: fanquake

doc/build-freebsd.md

@@ -72,7 +72,7 @@ There is an included test suite that is useful for testing code changes when dev
 To run the test suite (recommended), you will need to have Python 3 installed:
 
 ```bash
-pkg install python3
+pkg install python3 databases/py-sqlite3
 ```
 ---