Docs: Update links to older versions

Author: rozza

docs/reference/content/driver-reactive/index.md

@@ -26,6 +26,7 @@ For tutorials for some frequently used operations, see the [Tutorials section]({
 
 | Release | Documentation |
 |---------|---------------|
+| 1.13.1  | {{< releases version="1.13" url="https://mongodb.github.io/mongo-java-driver-reactivestreams/" >}} |
 | 1.12.0  | {{< releases version="1.12" url="https://mongodb.github.io/mongo-java-driver-reactivestreams/" >}} |
 | 1.11.0  | {{< releases version="1.11" url="https://mongodb.github.io/mongo-java-driver-reactivestreams/" >}} |
 | 1.10.0  | {{< releases version="1.10" url="https://mongodb.github.io/mongo-java-driver-reactivestreams/" >}} |

docs/reference/content/driver-scala/index.md

@@ -26,6 +26,8 @@ For tutorials for some frequently used operations, see the [Tutorials section]({
 
 | Release | Documentation |
 |---------|---------------|
+|  2.9.0  | {{< releases version="2.9.0" url="https://mongodb.github.io/mongo-scala-driver/" >}} |
+|  2.8.0  | {{< releases version="2.8.0" url="https://mongodb.github.io/mongo-scala-driver/" >}} |
 |  2.7.0  | {{< releases version="2.7.0" url="https://mongodb.github.io/mongo-scala-driver/" >}} |
 |  2.6.0  | {{< releases version="2.6.0" url="https://mongodb.github.io/mongo-scala-driver/" >}} |
 |  2.5.0  | {{< releases version="2.5.0" url="https://mongodb.github.io/mongo-scala-driver/" >}} |

docs/reference/content/driver/index.md

@@ -31,6 +31,7 @@ For tutorials for some frequently used operations, see the [Tutorials section]({
 
 | Release | Documentation |
 |---------|---------------|
+|  3.12.2 | {{< releases version="3.12" >}} | 
 |  3.11.2 | {{< releases version="3.11" >}} |
 |  3.10.2 | {{< releases version="3.10" >}} |
 |  3.9.0  | {{< releases version="3.9"  >}} |