Update libpepadapter to 2.1.0-rc25.

pEp/nightly.scm

@@ -167,16 +167,16 @@ privacy).")
 (define-public libpepadapter
   (package
     (name "libpepadapter")
-    (version "2.1.0-rc0")
+    (version "2.1.0-rc25")
     (source
      (origin
        (method hg-fetch)
        (uri (hg-reference
              (url "https://pep.foundation/dev/repos/libpEpAdapter")
-             (changeset "e657344c3ccf"))) ;; r171
+             (changeset "875a418fdffc"))) ;; r355
        (file-name (string-append name "-" version "-checkout"))
        (sha256
-        (base32 "1hbnlgmka0rrln0k0y9lbm2piqc2rmcfiagd4c76s9dkvh6b3yvm"))))
+        (base32 "1wijv2i19r4h8q3wsni3q8ybm2vdsx96zq6b59a1hj4ks9siiwy9"))))
     (build-system gnu-build-system)
     (arguments
      '(#:test-target "test"