Upgrade Bootstrap and Popper versions

Bootstrap -> 5.2.2
Popper -> 2.11.6

Author: greyli

flask_bootstrap/__init__.py

@@ -258,11 +258,11 @@ def create_app():
 
     .. versionadded:: 2.0.0
     """
-    bootstrap_version = '5.1.3'
-    popper_version = '2.10.2'
-    bootstrap_css_integrity = 'sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3'
-    bootstrap_js_integrity = 'sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13'
-    popper_integrity = 'sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB'
+    bootstrap_version = '5.2.2'
+    popper_version = '2.11.6'
+    bootstrap_css_integrity = 'sha384-Zenh87qX5JnK2Jl0vWa8Ck2rdkQ2Bzep5IDxbcnCeuOxjzrPF/et3URy9Bv1WTRi'
+    bootstrap_js_integrity = 'sha384-IDwe1+LCz02ROU9k972gdyvl+AESN10+x7tBKgc9I5HFtuNz0wWnPclzo6p9vxnk'
+    popper_integrity = 'sha384-oBqDVmMz9ATKxIep9tiCxS/Z9fNfEXiDAYTujMAeBAsjFuCZSmKbSSUnQlmh/jp3'
     popper_name = '@popperjs/core'
     static_folder = 'bootstrap5'