gnu: extremetuxracer: Update to 0.7.5.

* gnu/packages/games.scm (extremetuxracer): Update to 0.7.5.

gnu/packages/games.scm

@@ -1676,7 +1676,7 @@ Protocol).")
 (define-public extremetuxracer
   (package
     (name "extremetuxracer")
-    (version "0.7.4")
+    (version "0.7.5")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -1684,7 +1684,7 @@ Protocol).")
                     version "/etr-" version ".tar.xz"))
               (sha256
                (base32
-                "0d2j4ybdjmimg67v2fndgahgq4fvgz3fpfb3a4l1ar75n6hy776s"))))
+                "1ly63316c07i0gyqqmyzsyvygsvygn0fpk3bnbg25fi6li99rlsg"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))