add changelog

Author: c-thiel

.changelog/changelog.md

@@ -0,0 +1,10 @@
+# Add tags to AssumeRoleProviderBuilder
+# ---
+# applies_to: ["aws-sdk-rust"]
+# authors: ["c-thiel"]
+# references: ["aws-rust-sdk#1366"]
+# breaking: false
+# new_feature: true
+# bug_fix: false
+# ---
+# Add tags to AssumeRoleProviderBuilder