Add support for Fedora 39

Drop support for Fedora 37, EOL 2023-12-05.

test/docker-compose.yml

@@ -79,14 +79,6 @@ services:
       - R_VERSION=${R_VERSION}
     volumes:
       - ../:/r-builds
-  fedora-37:
-    image: fedora:37
-    command: /r-builds/test/test-yum.sh
-    environment:
-      - OS_IDENTIFIER=fedora-37
-      - R_VERSION=${R_VERSION}
-    volumes:
-      - ../:/r-builds
   fedora-38:
     image: fedora:38
     command: /r-builds/test/test-yum.sh
@@ -95,3 +87,11 @@ services:
       - R_VERSION=${R_VERSION}
     volumes:
       - ../:/r-builds
+  fedora-39:
+    image: fedora:39
+    command: /r-builds/test/test-yum.sh
+    environment:
+      - OS_IDENTIFIER=fedora-39
+      - R_VERSION=${R_VERSION}
+    volumes:
+      - ../:/r-builds