Update memcached Docker tag to v1.6.44

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

values.yaml

@@ -1709,7 +1709,7 @@ memcached-frontend:
     - -m 1024
   image:
     repository: memcached
-    tag: "1.6.42"
+    tag: "1.6.44"
   metrics:
     enabled: true
     image:
@@ -1734,7 +1734,7 @@ memcached-blocks-index:
     - -m 1024
   image:
     repository: memcached
-    tag: "1.6.42"
+    tag: "1.6.44"
   metrics:
     enabled: true
     image:
@@ -1759,7 +1759,7 @@ memcached-blocks:
     - -m 1024
   image:
     repository: memcached
-    tag: "1.6.42"
+    tag: "1.6.44"
   metrics:
     enabled: true
     image:
@@ -1784,7 +1784,7 @@ memcached-blocks-metadata:
     - -m 1024
   image:
     repository: memcached
-    tag: "1.6.42"
+    tag: "1.6.44"
   metrics:
     enabled: true
     image:
@@ -1809,7 +1809,7 @@ memcached-parquet-labels:
     - -m 1024
   image:
     repository: memcached
-    tag: "1.6.42"
+    tag: "1.6.44"
   metrics:
     enabled: true
     image: