Bump Npgsql version to 4.1.*

[#78]

src/steeltoe-2.5.x--netcoreapp3.1--webapi--csharp/.IZR/metadata.yaml

@@ -32,7 +32,7 @@ parameters:
   - name: mysql-version
     value: 8.0.*
   - name: npgsql-version
-    value: 4.0.*
+    value: 4.1.*
   - name: rabbitmq-version
     value: 5.1.*
   - name: threading-pool-version

src/steeltoe-3.0.x--net5.0--webapi--csharp/.IZR/metadata.yaml

@@ -32,7 +32,7 @@ parameters:
   - name: mysql-version
     value: 8.0.*
   - name: npgsql-version
-    value: 4.0.*
+    value: 4.1.*
   - name: rabbitmq-version
     value: 5.1.*
   - name: sqlclient-version

src/steeltoe-3.0.x--netcoreapp3.1--webapi--csharp/.IZR/metadata.yaml

@@ -32,7 +32,7 @@ parameters:
   - name: mysql-version
     value: 8.0.*
   - name: npgsql-version
-    value: 4.0.*
+    value: 4.1.*
   - name: rabbitmq-version
     value: 5.1.*
   - name: sqlclient-version