Update Elixir and OTP versions (#446)

Author: bryannaegele

.github/elixir-test-matrix.json

@@ -1,12 +1,12 @@
 {
-  "otp_version": ["26.2.5.3", "25.3.2.14"],
-  "elixir_version": ["1.16.3", "1.15.8"],
+  "otp_version": ["27.2", "25.3.2.16"],
+  "elixir_version": ["1.18.1", "1.15.8"],
   "rebar3_version": ["3.24.0"],
-  "os": ["ubuntu-22.04"],
+  "os": ["ubuntu-24.04"],
   "include": [
     {
-      "elixir_version": "1.17.3",
-      "otp_version": "27.1",
+      "elixir_version": "1.18.1",
+      "otp_version": "27.2",
       "check_formatted": true
     }
   ],

.github/erlang-test-matrix.json

@@ -1,5 +1,5 @@
 {
-  "otp_version": ["27.1", "26.2.5.3", "25.3.2.14"],
+  "otp_version": ["27.2", "25.3.2.16"],
   "rebar3_version": ["3.24.0"],
-  "os": ["ubuntu-22.04"]
+  "os": ["ubuntu-24.04"]
 }