Update release notes for TLS changes in 1.52
Update release notes for TLS changes in 1.52

savichris/spongycastle,savichris/spongycastle,open-keychain/spongycastle,isghe/bc-java,onessimofalconi/bc-java,Skywalker-11/spongycastle,sergeypayu/bc-java,isghe/bc-java,FAU-Inf2/spongycastle,sergeypayu/bc-java,sergeypayu/bc-java,FAU-Inf2/spongycastle,bcgit/bc-java,open-keychain/spongycastle,savichris/spongycastle,lesstif/spongycastle,open-keychain/spongycastle,sonork/spongycastle,isghe/bc-java,Skywalker-11/spongycastle,FAU-Inf2/spongycastle,onessimofalconi/bc-java,lesstif/spongycastle,onessimofalconi/bc-java,bcgit/bc-java,bcgit/bc-java,sonork/spongycastle,Skywalker-11/spongycastle,sonork/spongycastle,lesstif/spongycastle