Update to latest libmongoc version

alcaeus · alcaeus · commit d59e00e5c91e · 2020-03-09T19:43:00.000+01:00
diff --git a/src/LIBMONGOC_VERSION_CURRENT b/src/LIBMONGOC_VERSION_CURRENT
@@ -1 +1 @@
-1.17.0-20200228+gitb7aa48780b
+1.17.0-20200309+git49ccff2845
diff --git a/src/libmongoc b/src/libmongoc
@@ -1 +1 @@
-Subproject commit b7aa48780bf130fb62d662db681d5226eed9de93
+Subproject commit 49ccff28453da8f84dae5c5a240fe930415aa2fa
