Updates downloaders, hydra, utils-calendar, utils-mail

diff --git a/downloaders b/downloaders
index 28d0cacf27bfcd83594a67007206618ce9bd7f15..580dba9df805cf3941b18381e8a5c70f9446663f 160000 (submodule)
--- a/downloaders
+++ b/downloaders
@@ -1 +1 @@
-Subproject commit 28d0cacf27bfcd83594a67007206618ce9bd7f15
+Subproject commit 580dba9df805cf3941b18381e8a5c70f9446663f

diff --git a/hydra b/hydra
index d584f6d086c02ee796c8ba9f1a7afc30422b3601..11a28d88f5b2b9935ba890347c9e15127924cf0b 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit d584f6d086c02ee796c8ba9f1a7afc30422b3601
+Subproject commit 11a28d88f5b2b9935ba890347c9e15127924cf0b

diff --git a/utils-calendar b/utils-calendar
index cc760471fc7e1ad008c8e461a826e8e1093183ff..bb612932544e35ec9e63e1eaec9d58596cf7af69 160000 (submodule)
--- a/utils-calendar
+++ b/utils-calendar
@@ -1 +1 @@
-Subproject commit cc760471fc7e1ad008c8e461a826e8e1093183ff
+Subproject commit bb612932544e35ec9e63e1eaec9d58596cf7af69

diff --git a/utils-mail b/utils-mail
index 9b735748d5470235a47b2f7dd4fa18df3231d7b9..d0792db5a2552aef8090efeb2289bd37ce739935 160000 (submodule)
--- a/utils-mail
+++ b/utils-mail
@@ -1 +1 @@
-Subproject commit 9b735748d5470235a47b2f7dd4fa18df3231d7b9
+Subproject commit d0792db5a2552aef8090efeb2289bd37ce739935