Fix program startup of the static binary (#3526)

The recent addition of the s3 connector causes the linker to add symbols
from the AWS crypto abstraction layer library. This lib uses the
`dlopen` and `dlclose` functions even when built as a static library -
which is possible. What's more, the return value of those functions is
asserted, causing the tenzir executables to abort during initialization.

The good news is that this can be worked around by disabling the
problematic assert. For that we pull a patch that does exactly that from
an open upstream pull request.

nix/overlay.nix

@@ -21,6 +21,18 @@ in {
           ./google-cloud-cpp/0001-Use-pkg-config-to-find-CURL.patch
         ];
       });
+  aws-c-cal =
+    if !isStatic
+    then prev.aws-c-cal
+    else
+      prev.aws-c-cal.overrideAttrs (orig: {
+        patches = (orig.patches or []) ++ [
+          (prev.fetchpatch {
+            url = "https://github.com/awslabs/aws-c-cal/commit/ee46efc3dd0cf300ff4ec89cc2d79f1b0fe1c8cb.patch";
+            sha256 = "sha256-bFc0Mqt0Ho3i3xGHiQitP35dQgPd9Wthkyb1TT/nRYs=";
+          })
+        ];
+      });
   arrow-cpp =
     if !isStatic
     then prev.arrow-cpp