docs: update links to polars 0.43.1 at py-1.9.0 tag

[skip ci]

README.md

@@ -97,7 +97,7 @@
 😣: uses additional memory proportional to the cardinality of the columns in the CSV.  
 🧠: expensive operations are memoized with available inter-session Redis/Disk caching for fetch commands.  
 🗄️: [Extended input support](#extended-input-support).  
-🐻‍❄️: command powered by [![polars 0.43.1 at the py-1.8.2 tag](https://img.shields.io/badge/polars-0.43.1-blue) at py-1.8.2 tag](https://github.com/pola-rs/polars/releases/tag/py-1.8.2).  
+🐻‍❄️: command powered by [![polars 0.43.1 at the py-1.9.0 tag](https://img.shields.io/badge/polars-0.43.1-blue) at py-1.9.0 tag](https://github.com/pola-rs/polars/releases/tag/py-1.9.0).  
 🤖: command uses Natural Language Processing & General AI techniques.  
 🏎️: multithreaded and/or faster when an index (📇) is available.  
 🚀: multithreaded even without an index.  

src/cmd/sqlp.rs

@@ -6,8 +6,8 @@ Polars SQL is a SQL dialect, converting SQL queries to fast Polars LazyFrame exp
 (see https://docs.pola.rs/user-guide/sql/intro/).
 
 For a list of SQL functions and keywords supported by Polars SQL, see
-https://github.com/pola-rs/polars/blob/py-1.8.2/crates/polars-sql/src/functions.rs and
-https://github.com/pola-rs/polars/blob/py-1.8.2/crates/polars-sql/src/keywords.rs.
+https://github.com/pola-rs/polars/blob/py-1.9.0/crates/polars-sql/src/functions.rs and
+https://github.com/pola-rs/polars/blob/py-1.9.0/crates/polars-sql/src/keywords.rs.
 https://docs.pola.rs/py-polars/html/reference/sql/index.html also provides a more readable
 version of the SQL functions and keywords, though be aware that it's for the Python version
 of Polars, so there will be some minor syntax differences.