Updated premium sponsors

Author: squidfunk

.github/assets/sponsors/sponsor-siemens.png

@@ -71,6 +71,9 @@
   <a href="https://futureplc.com/" target=_blank><img
     src="https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-future.svg" height="120"
   /></a>
+  <a href="https://opensource.siemens.com/" target=_blank><img
+    src="https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-siemens.png" height="120"
+  /></a>
 </p>
 <p>&nbsp;</p>
 <p align="center"><strong>Bronze sponsors</strong></p>

README.md

@@ -21,6 +21,7 @@ _Be our first gold sponsor!_
 [![Trendpop]{ style="height: 120px" }](https://www.trendpop.com/){ target=_blank title="Trendpop" }
 [![SailPoint]{ style="height: 120px" }](https://documentation.sailpoint.com/){ target=_blank title="SailPoint" }
 [![Future]{ style="height: 120px" }](https://futureplc.com/){ target=_blank title="Future" }
+[![SIEMENS]{ style="height: 120px" }](https://opensource.siemens.com/){ target=_blank title="SIEMENS" }
 
 ----
 
@@ -108,6 +109,7 @@ _Be our first gold sponsor!_
   [EquipmentShare]: https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-equipmentshare.png
   [Hummingbot]: https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-hummingbot.png
   [Future]: https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-future.svg
+  [SIEMENS]: https://raw.githubusercontent.com/squidfunk/mkdocs-material/master/.github/assets/sponsors/sponsor-siemens.png
 
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