appveyor: Fix too wide OpenSSL version regexp.

Current regexp is not good enough.  OpenSSL 3.3.0 is now available
and unfortunately the regexp is matching both 3.3.0 and 3.0.13.

All the AppVeyor runs are currently failing because of this.

Making it more restrictive by matching on the start of the string,
explicit dots and numbers after the last dot.  Hopefully, this is
good enough.

In addition, taking only the first result just in case it mismatches
again.

Fixes: 9d82084 ("appveyor: Build with OpenSSL 3.0.")
Acked-by: Simon Horman <[email protected]>
Acked-by: Eelco Chaudron <[email protected]>
Signed-off-by: Ilya Maximets <[email protected]>

appveyor.yml

@@ -26,12 +26,12 @@ install:
     $URL = "https://raw.githubusercontent.com/slproweb/opensslhashes/master/win32_openssl_hashes.json"
     $webData = (Invoke-WebRequest -Uri $URL).content | ConvertFrom-Json
     $source = ($webData.files.PSObject.Properties | Where-Object {
-        $_.Value.basever   -match "3.0.*" -and
-        $_.Value.bits      -eq    "64"    -and
-        $_.Value.arch      -eq    "INTEL" -and
-        $_.Value.installer -eq    "exe"   -and
+        $_.Value.basever   -match "^3\.0\.[0-9]+" -and
+        $_.Value.bits      -eq    "64"            -and
+        $_.Value.arch      -eq    "INTEL"         -and
+        $_.Value.installer -eq    "exe"           -and
         -not $_.Value.light
-    } | Select-Object Value).PSObject.Properties.Value
+    } | Select-Object Value | Select -First 1).PSObject.Properties.Value
 
     Write-Host "Latest OpenSSL 3.0:" ($source | Format-List | Out-String)