upgrading Go to 1.19

We switched to GO 1.18 in August, 2022 which is now EOL.

Our CI has switched to start running with Go 1.19.

Given these two motivations, upgrading pipelines to use 1.19

Signed-off-by: pritidesai <pdesai@us.ibm.com>

docs/pipeline-api.md

@@ -1511,8 +1511,8 @@ The names of the <code>params</code> in the <code>Matrix</code> must match the n
 </td>
 <td>
 <em>(Optional)</em>
-<p>Include is a list of MatrixInclude
-Note this field is in preview mode and not yet supported</p>
+<p>Include is a list of MatrixInclude which allows passing in specific combinations of Parameters into the Matrix.
+Note that Include is in preview mode and not yet supported.</p>
 </td>
 </tr>
 </tbody>
@@ -9067,8 +9067,8 @@ The names of the <code>params</code> in the <code>Matrix</code> must match the n
 </td>
 <td>
 <em>(Optional)</em>
-<p>Include is a list of MatrixInclude
-Note this field is in preview mode and not yet supported</p>
+<p>Include is a list of MatrixInclude which allows passing in specific combinations of Parameters into the Matrix.
+Note that Include is in preview mode and not yet supported.</p>
 </td>
 </tr>
 </tbody>

go.mod

@@ -1,6 +1,6 @@
 module github.com/tektoncd/pipeline
 
-go 1.18
+go 1.19
 
 require (
 	github.com/Microsoft/go-winio v0.6.0 // indirect