Remove support of go v1.21

.github/workflows/ci.yaml

@@ -8,7 +8,7 @@ env:
   # Path to where test results will be saved.
   TEST_RESULTS: /tmp/test-results
   # Default minimum version of Go to support.
-  DEFAULT_GO_VERSION: "1.21"
+  DEFAULT_GO_VERSION: "1.22"
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -109,7 +109,7 @@ jobs:
   compatibility-test:
     strategy:
       matrix:
-        go-version: ["1.22", "1.21"]
+        go-version: ["1.22"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         # GitHub Actions does not support arm* architectures on default
         # runners. It is possible to acomplish this with a self-hosted runner

CHANGELOG.md

@@ -8,6 +8,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+The minimum supported Go version is `1.22`.
+
 ### Changed
 
 - Upgrade OTel to version `v1.30.0/v0.52.0`. (#356)
@@ -18,6 +20,10 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
   This change improves compatibility with certain drivers that perform a verification of the `dataSourceName` before establishing a connection.
 
+### Removed
+
+- Support for Go `1.21`. (#356)
+
 ## [0.33.0] - 2024-08-27
 
 ### Added

README.md

@@ -82,15 +82,10 @@ This project is tested on the following systems.
 | OS      | Go Version | Architecture |
 | ------- | ---------- | ------------ |
 | Ubuntu  | 1.22       | amd64        |
-| Ubuntu  | 1.21       | amd64        |
 | Ubuntu  | 1.22       | 386          |
-| Ubuntu  | 1.21       | 386          |
 | MacOS   | 1.22       | amd64        |
-| MacOS   | 1.21       | amd64        |
 | Windows | 1.22       | amd64        |
-| Windows | 1.21       | amd64        |
 | Windows | 1.22       | 386          |
-| Windows | 1.21       | 386          |
 
 While this project should work for other systems, no compatibility guarantees
 are made for those systems currently.