chore(docs): add callout for database upgrades in TC (#914)

Add callout in technical changelog for all versions that upgrade
Postgres.

Author: jdpleiness

docs/technical-changelog.mdx

@@ -6,6 +6,11 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 5
 
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
+>
+> Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!
+
 ## v5.11.6271
 
 - [sourcegraph](https://github.com/sourcegraph/sourcegraph/releases/tag/v5.11.6271)
@@ -35,6 +40,11 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 4
 
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
+>
+> Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!
+
 ## v5.11.5234
 
 - [sourcegraph](https://github.com/sourcegraph/sourcegraph/releases/tag/v5.11.5234)
@@ -73,6 +83,11 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 3
 
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
+>
+> Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!
+
 ## v5.11.4013
 
 - [sourcegraph](https://github.com/sourcegraph/sourcegraph/releases/tag/v5.11.4013)
@@ -120,6 +135,11 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 2
 
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
+>
+> Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!
+
 ## v5.11.3601
 
 - [sourcegraph](https://github.com/sourcegraph/sourcegraph/releases/tag/v5.11.3601)
@@ -145,6 +165,11 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 1
 
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
+>
+> Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!
+
 ## v5.11.2732
 
 - [sourcegraph](https://github.com/sourcegraph/sourcegraph/releases/tag/v5.11.2732)
@@ -178,7 +203,8 @@ This page documents all notable changes to Sourcegraph. For more detailed change
 
 # 5.11 Patch 0
 
-> Warning: This release updates the database container images from Postgres 12 to Postgres 16, and begins using Wolfi based images. Customers are advised to have a database backup before upgrading! See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice!
+> Attention -  If upgrading from Sourcegraph version 5.9 or earlier, this release will update our included database container images from Postgres 12 to Postgres 16.
+> Customers are advised to have a database backup before upgrading. See our [postgres 12 end of life](https://sourcegraph.com/docs/admin/postgres12_end_of_life_notice#postgres-12-end-of-life) notice for more information.
 >
 > Also be sure to check your deployment type's [upgrade notes](http://sourcegraph.com/docs/admin/updates#instance-specific-procedures)!