#1361 updated update sites as I think they should be

Author: jantje

io.sloeber.product/arduino.product

@@ -262,13 +262,12 @@ United States, other countries, or both.
    </configurations>
 
    <repositories>
-      <repository location="http://download.eclipse.org/nebula/releases/latest/" enabled="true" />
-      <repository location="http://eclipse.baeyens.it/update/V4/nightly/" enabled="false" />
-      <repository location="http://eclipse.baeyens.it/update/V4/stable/" enabled="true" />
-      <repository location="http://gnu-mcu-eclipse.netlify.com/v4-neon-updates/" enabled="true" />
-      <repository location="http://download.eclipse.org/releases/latest/" enabled="true" />
-      <repository location="http://download.eclipse.org/technology/babel/update-site/R0.18.1/2020-09/" enabled="true" />
-      <repository location="http://https://download.eclipse.org/justj/jres/15/updates/release/latest/" enabled="true" />
+      <repository location="https://download.eclipse.org/nebula/releases/latest/" enabled="true" />
+      <repository location="https://eclipse.baeyens.it/update/V4/nightly/" enabled="false" />
+      <repository location="https://eclipse.baeyens.it/update/V4/stable/" enabled="true" />
+      <repository location="https://download.eclipse.org/releases/latest/" enabled="true" />
+      <repository location="https://download.eclipse.org/technology/babel/update-site/latest/" enabled="true" />
+      <repository location="https://download.eclipse.org/justj/jres/15/updates/release/latest/" enabled="true" />
       <repository location="https://download.eclipse.org/eclipse/updates/latest" enabled="true" />
    </repositories>
 

io.sloeber.updatesite/category.xml

@@ -16,9 +16,7 @@
          Only select this if you are upgrading the Sloeber IDE
       </description>
    </category-def>
-   <repository-reference location="http://download.eclipse.org/releases/latest/" enabled="true" />
-   <repository-reference location="http://download.eclipse.org/nebula/releases/latest/" enabled="true" />
-   <repository-reference location="http://gnu-mcu-eclipse.netlify.com/v4-neon-updates/" enabled="true" />
-   <repository-reference location="http://https://download.eclipse.org/technology/babel/update-site/R0.17.1/2019-12/" enabled="true" />
-   <repository-reference location="http://download.eclipse.org/tools/cdt/releases/9.10" enabled="true" />
+   <repository-reference location="https://download.eclipse.org/releases/latest/" enabled="true" />
+   <repository-reference location="https://download.eclipse.org/technology/babel/update-site/latest/" enabled="true" />
+   <repository-reference location="https://download.eclipse.org/nebula/releases/latest/" enabled="true" />
 </site>