[chore] update (BC) compatibility matrix

Author: kares

README.md

@@ -27,6 +27,8 @@ the JRuby [mailing list][1] or the [bug tracker][2].
 |      ~>0.10.5 |  1.7.20-9.3.x |  Java 7-11 |    1.60-1.68 |
 |      ~>0.11.x |   9.0.x-9.3.x |  Java 7-11 |    1.62-1.68 |
 |      ~>0.12.x |   9.1.x-9.3.x |  Java 8-15 |    1.65-1.68 |
+|      ~>0.13.x |   9.1.x-9.3.x |  Java 8-17 |    1.68-1.69 |
+|      ~>0.14.x |   9.1.x-9.3.x |  Java 8-17 |         1.71 |
 
 NOTE: backwards JRuby compatibility was not handled for versions <= **0.9.6**