feat(sponsors): update list and add new sponsors

Signed-off-by: Laura Santamaria <nimbinatus@users.noreply.github.com>

Author: nimbinatus

assets/sponsors/l/liquibase.png

@@ -57,15 +57,15 @@ On average across the past 10 years, we sell out our venue and have between 270-
     <tbody>
         <tr>
             <td>Number remaining</td>
-            <td>9</td>
+            <td>5</td>
             <td>2</td>
-            <td>1</td>
-            <td>1</td>
+            <td>SOLD OUT</td>
+            <td>SOLD OUT</td>
             <td>SOLD OUT</td>
             <td>1</td>
-            <td>6</td>
+            <td>5</td>
             <td>1</td>
-            <td>Details provided via email</td>
+            <td>SOLD OUT</td>
         </tr>
         <tr>
             <td>Cost (USD)</td>

assets/sponsors/m/mendral.png

@@ -142,20 +142,44 @@ sponsors:
     level: gold
   - id: groundcover
     level: gold
+  - id: redhat
+    level: gold
+  - id: puppet-by-perforce
+    level: gold
+#  - id: gold-6
+#    level: gold
+#  - id: gold-7
+#    level: gold
+#  - id: gold-8
+#    level: gold
+#  - id: gold-9
+#    level: gold
+#  - id: gold-10
+#    level: gold
+#  - id: track-1
+#    level: track
+#  - id: track-2
+#    level: track
   - id: harness
     level: happyhour
+  - id: liquibase
+    level: happyhour
   - id: texasmutual
     level: coffee
   - id: crash-override
     level: lanyard
+#  - id: quiet-room
+#    level: quiet-room
   - id: newiron
     level: careerroom
 #  - id: dryrun-security
 #    level: startup
   - id: autoptic
     level: startup
-#  - id: ops0
-#    level: startup
+  - id: ops0
+    level: startup
+  - id: mendral
+    level: startup
   - id: texas-state-university
     level: community
 

assets/sponsors/o/ops0.png

@@ -0,0 +1,2 @@
+name: "Liquibase"
+url: "https://www.liquibase.com/"

content/events/2026-austin/sponsor.md

@@ -0,0 +1,2 @@
+name: "Mendral"
+url: "https://www.mendral.com/"

data/events/2026/austin/main.yml

@@ -0,0 +1,2 @@
+name: "ops0"
+url: "https://ops0.com/"