Update all the things for Guzzle 7 (php8 compat)

ChristophWurst · ChristophWurst · commit 9b833f5d2d2f · 2021-01-05T13:31:04.000+01:00
Guzzle 6 doesn't support php8, hence we need this for 21 for full php8
support.

Signed-off-by: Christoph Wurst &lt;christoph@winzerhof-wurst.at&gt;
diff --git a/3rdparty b/3rdparty
@@ -1 +1 @@
-Subproject commit 2462d1b72f5b04f8e04f4b17b2cf5a3ccf7ba19b
+Subproject commit 875ee27505a280f58a893b16976fe36572fd82c4
