patch 8.2.4816: still using older codecov app in some places of CI

Problem:    Still using older codecov app in some places of CI.
Solution:   Use v3.1.0. (closes #10209)
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bdeb918..cc2816c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -254,7 +254,7 @@
 
       - name: Codecov
         if: matrix.coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v3.1.0
         with:
           flags: linux,${{ matrix.features }}-${{ matrix.compiler }}-${{ matrix.extra }}
 
@@ -600,14 +600,14 @@
 
       - name: Codecov (gVim)
         if: matrix.coverage
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3.1.0
         with:
           directory: src
           flags: windows,${{ matrix.toolchain }}-${{ matrix.arch }}-${{ matrix.features }}-gui
 
       - name: Codecov (Vim)
         if: matrix.coverage
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3.1.0
         with:
           directory: src2
           flags: windows,${{ matrix.toolchain }}-${{ matrix.arch }}-${{ matrix.features }}
diff --git a/src/version.c b/src/version.c
index 3dc22d0..57f2e8d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4816,
+/**/
     4815,
 /**/
     4814,