GHA Erlang/OTP updates: keep both 26.2 and 26.1

Author: michaelklishin

.github/workflows/update-otp-patches.yaml

@@ -16,6 +16,7 @@ jobs:
         - "25.1"
         - "25.2"
         - "25.3"
+        - "26.1"
         - "26.2"
         include:
         - erlang_version: "25.0"
@@ -42,11 +43,16 @@ jobs:
           labels: |
             backport-v3.12.x
             backport-v3.11.x
-        - erlang_version: "26.2"
+        - erlang_version: "26.1"
           name: '26_1'
           branch: main
           labels: |
             backport-v3.12.x
+        - erlang_version: "26.2"
+          name: '26_2'
+          branch: main
+          labels: |
+            backport-v3.12.x
     timeout-minutes: 10
     env:
       branch: bump-otp-${{ matrix.erlang_version }}