chore: Update SUPPORT_POLICY.rst (#518)

* chore: Adds pyhton36 deprecation to changelog

* fix: updates compatability test to 3.7

* fix: pin tox dependency < 4.0

* fix: reword the deprecation announcement

* chore: Update SUPPORT_POLICY.rst

* fix: Add Maintenance Date in SUPPORT_POLICY.rst

Co-authored-by: Tony Knapp <[email protected]>

* fix: SUPPORT_POLICY.rst

Co-authored-by: Tony Knapp <[email protected]>

Co-authored-by: Shubham Chaturvedi <[email protected]>
Co-authored-by: Shubham Chaturvedi <[email protected]>
Co-authored-by: Tony Knapp <[email protected]>

Author: 4 people

SUPPORT_POLICY.rst

@@ -22,16 +22,16 @@ This table describes the current support status of each major version of the AWS
       - Next status
       - Next status date
     * - 1.x
-      - Maintenance
       - End of Support
-      - 2022-07-08
+      - 
+      - 
     * - 2.x
-      - Maintenance
       - End of Support
-      - 2022-07-15
+      - 
+      - 
     * - 3.x
       - Generally Available
-      -
-      -
+      - Maintenance
+      - 2023-07-23
 
 .. _AWS SDKs and Tools Maintenance Policy: https://docs.aws.amazon.com/sdkref/latest/guide/maint-policy.html#version-life-cycle