chore: update README links (#1877)

README.md

@@ -54,7 +54,7 @@ following instructions for your OS and CPU architecture.
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.linux.amd64" -o cloud-sql-proxy
 
@@ -68,7 +68,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.linux.386" -o cloud-sql-proxy
 
@@ -82,7 +82,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.linux.arm64" -o cloud-sql-proxy
 
@@ -96,7 +96,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.linux.arm" -o cloud-sql-proxy
 
@@ -110,7 +110,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.darwin.amd64" -o cloud-sql-proxy
 
@@ -124,7 +124,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0"
+URL="https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0"
 
 curl "$URL/cloud-sql-proxy.darwin.arm64" -o cloud-sql-proxy
 
@@ -138,7 +138,7 @@ chmod +x cloud-sql-proxy
 
 ```sh
 # see Releases for other versions
-curl https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0/cloud-sql-proxy.x64.exe -o cloud-sql-proxy.exe
+curl https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0/cloud-sql-proxy.x64.exe -o cloud-sql-proxy.exe
 ```
 
 </details>
@@ -148,7 +148,7 @@ curl https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0/
 
 ```sh
 # see Releases for other versions
-curl https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.5.0/cloud-sql-proxy.x86.exe -o cloud-sql-proxy.exe
+curl https://storage.googleapis.com/cloud-sql-connectors/cloud-sql-proxy/v2.6.0/cloud-sql-proxy.x86.exe -o cloud-sql-proxy.exe
 ```
 
 </details>