chore: update librarian version to v0.45.0 (#14483)

Update librarian version to v0.45.0.

## Debug Info
### System Details
- JDK version: javac 17.0.7
- Maven version: Apache Maven 3.9.15
(98b2cdbfdb5f1ac8781f537ea9acccaed7922349)
- OS: Linux 7.1.6-1rodete1-amd64 x86_64
- Librarian version: v0.45.0

### Commands Executed
- `go run github.com/googleapis/librarian/cmd/librarian@latest update
version`
- `go run github.com/googleapis/librarian/cmd/librarian@v0.45.0 tidy`
- `go run github.com/googleapis/librarian/cmd/librarian@v0.45.0 install`
- `go run github.com/googleapis/librarian/cmd/librarian@v0.45.0 generate
--all`
- `git add .`
- `git commit -m "chore: update librarian version to v0.45.0"`

Author: sofisl

java-spanner/google-cloud-spanner/src/main/java/com/google/cloud/spanner/omni/DynamicKeyManager.java

@@ -239,8 +239,8 @@ private static PrivateKey parsePrivateKey(byte[] keyBytes) throws Exception {
       if (keyStr.contains("-----BEGIN RSA PRIVATE KEY-----")
           || keyStr.contains("-----BEGIN EC PRIVATE KEY-----")) {
         throw new IllegalArgumentException(
-            "PKCS#1 private keys are not supported. Please convert your key to PKCS#8 format using: "
-                + "openssl pkcs8 -topk8 -nocrypt -in <key> -out <key_pkcs8>");
+            "PKCS#1 private keys are not supported. Please convert your key to PKCS#8 format using:"
+                + " openssl pkcs8 -topk8 -nocrypt -in <key> -out <key_pkcs8>");
       }
       if (keyStr.contains("-----BEGIN PRIVATE KEY-----")) {
         der = extractPemContent(keyStr, "-----BEGIN PRIVATE KEY-----", "-----END PRIVATE KEY-----");