gnu: Use HTTPS for julialang.org home pages.

* gnu/packages/textutils.scm (utf8proc)[home-page]: Use HTTPS.
* gnu/packages/julia.scm (julia)[home-page]: Likewise

gnu/packages/julia.scm

@@ -384,7 +384,7 @@
     ;; Julia is not officially released for ARM and MIPS.
     ;; See https://github.com/JuliaLang/julia/issues/10639
     (supported-systems '("i686-linux" "x86_64-linux" "aarch64-linux"))
-    (home-page "http://julialang.org/")
+    (home-page "https://julialang.org/")
     (synopsis "High-performance dynamic language for technical computing")
     (description
      "Julia is a high-level, high-performance dynamic programming language for

gnu/packages/textutils.scm

@@ -177,7 +177,7 @@ libenca and several charset conversion libraries and tools.")
              (substitute* "data/GraphemeBreakTest.txt"
                (("÷") "/")
                (("×") "+")))))))
-    (home-page "http://julialang.org/utf8proc/")
+    (home-page "https://julialang.org/utf8proc/")
     (synopsis "C library for processing UTF-8 Unicode data")
     (description "utf8proc is a small C library that provides Unicode
 normalization, case-folding, and other operations for data in the UTF-8