Lower requirement for glibc to 2.17

This was not correctly merged from 5.13 due to the check moving to
another file.

Task-number: QTBUG-77171
Change-Id: I4388ea9a58509c93574d7953eebb09a62b5ffd63
Reviewed-by: Michal Klocek <michal.klocek@qt.io>

src/buildtools/configure.json

@@ -288,13 +288,13 @@
             "type": "detectGn"
         },
         "webengine-glibc": {
-            "label": "glibc > 2.26",
+            "label": "glibc > 2.16",
             "type": "compile",
             "test": {
                 "include": "features.h",
                 "tail": [
-                    "#if __GLIBC__ < 2 || __GLIBC_MINOR__ < 27",
-                    "#error glibc versions below 2.27 are not supported",
+                    "#if __GLIBC__ < 2 || __GLIBC_MINOR__ < 17",
+                    "#error glibc versions below 2.17 are not supported",
                     "#endif"
                 ]
             }