🚑 fix(release) rewrite the FusionDirectory Life Cycle page

Signed-off-by: Benoit Mortier <benoit.mortier@opensides.be>

source/release/esr.rst

@@ -3,11 +3,5 @@ FusionDirectory Life Cycle
 
 A maintained version is a **major** version for which we release **minor** bug fix releases and communicate about security vulnerabilities.
 
-Our general support policy is to maintain major releases until **3 months** after the next major version is released to give some time for upgrading.
- 
-We also provide a more conservative life-cycle through **ESR** versions.
- 
-The **ESR** tag is given to a major release once it has been thoroughly tested and proven reliable on real production systems. 
+Our general support policy is to maintain major releases until **6 months** after the next major version is released to give some time for upgrading.
 
-**ESR** versions are maintained until **6 months** after the next **ESR** version is announced, allowing less frequent major upgrades, 
-and a larger time-frame for switching between them.